The longer leaf blade provides more photosynthesis and stronger root systems.
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Again, not a knife, but instead a leaf blade of some kind, which looks straight outta that elf movie with really bad SEO.
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The surface of the leaf blade is leaf-blade surface is considered puberulous and sparsely hairy; It is hairy abaxially.
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The pinnae are clustered slightly together near the base of the leaf blade. These pinnae are opposite each other in a pair; each pair forms a neat 'V'-shape. The pinnae in the middle of the leaf blade are 31–60 cm long and 1.2-2.5 cm wide.
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Leaf blade. 6. Internode. 7. Axillary bud. 8. Petiole. 9. Stem. 10. Node. 11. Tap root. 12. Root hairs. 13.
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The venation in the leaf blade is pinnate. It has a single midrib and secondary veins branching off the midvein.
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The tree is distinguished by Fu (2002) as having "Leaf blade adaxially with densely curved pubescence. Flowers and fruits February - April".
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The leathery leaf blade is long, and wide and is oblong to ovate in shape. In young trees, the leaf edges are irregularly lobed or split. On older trees, the leaves are rounded and dark green, with a smooth leaf margin. The leaf blade has a prominent main nerve and starting on each side six to eight lateral nerves.
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Leaf blade underside is covered with stellate hairs or scales.prominent veining. underside surface is covered with dense rusty hair. numerous lateral nerves.
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In plants affected by Xanthomonas, the wilting can begin with any leaf and the infected leaves tend to snap along the leaf blade.
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Stellaria neglecta resembles S. media, but is generally larger in all its parts. It has weak branching stems, that are usually decumbent at the base, ascending distally to around 80–90 cm. Between each pair of nodes, the stem carries a single row of hairs. The lower leaves are long-stalked, with the leaf blade 1−2.5 cm long and the stalk up to twice as long; the upper leaves have a short flattened stalk or are sessile, with the leaf blade up to 5 cm long; the leaf blade is ovate to broadly elliptical, acuminate, and glabrous.
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It winds around the branchlets of other plants for protection. The base of the stem is woolly. The petiole, the stalk that attaches the leaf blade to the stem, is 0–5 millimeters long with the leaf blade being 6 to 50 millimeters. Leaves are lanceolate, as in shaped like the tip of a lance, as well as being linear to ovate.
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Shorea crassa is a species of plant in the family Dipterocarpaceae. The species name is derived from Latin (' = thick) and refers to thick leaf blade.
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While the leaf blade narrows at the foot, it still extends to the stem. The leaf surface is softly hairy with glandular hairs particularly near the edge.
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Alternately arranged leaves with dark green on both side. Stipules are either small or none. Base of petiole swollen to form the pulvinus. Leaf blade is bipinnate.
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Full-grown larvae are long. Pupation usually takes place at the base of the leaf blade of the host plant. The species overwinters as a young larva.
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The leaves have no sheath or stipules and are alternately arranged along the stem, are divided into a leaf stalk and leaf blade. The leaf blade is twice compounded or very deeply incised, first into three leaflets, themselves palmately compounded or deeply divided (this is called biternate), each leaflet being further divided into segments that themselves are lobed, resulting in seventy to one hundred segments of ¾-3¼ cm wide.
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Dry inflorescence Brachypodium sylvaticum is a tall tufted perennial bunchgrass that grows up to about a high. The drooping leaf blade of the plant is dark green, or bright-yellow green, flat and up to 12 mm wide with a fringe of hairs surrounding the edge of the leaf. The leaves do not have auricles. The leaf blade is joined to the hollow culm by the leaf sheath.
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Cleistesiopsis is a terrestrial orchid with an underground network of spreading fibrous roots. It is found in small clusters of single flowering stems, each with a single leaf blade about halfway up the 30 – 45 cm stem. A smaller floral bract clasps around the base of the flower and appears as a second smaller leaf blade. The flower has three brown-green sepals spreading upward from the stem.
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Chard or Swiss chard (Beta vulgaris subsp. vulgaris, Cicla-Group and Flavescens-Group) () is a green leafy vegetable. In the cultivars of the Flavescens-Group, the leaf stalks are large and often prepared separately from the leaf blade; the Cicla-Group is the leafy spinach beet. The leaf blade can be green or reddish in color; the leaf stalks are usually white, or a colorful yellow or red.
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In later mines the leaf blade becomes rather inflated and the parenchyma nearly all consumed. Mining larvae can be found in early spring. The larvae are pale yellowish.
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The midvein is often limited to the lower half of the leaf blade, or has completely disappeared. The cells of the leaf blade are prosenchymatic, many times longer than wide, with pointed ends interlocking. The sporophyte consists of a regularly shaped sporangium on a long stalk or seta. The spores are distributed via a ring-shaped opening with two rows of teeth, the peristome, which before ripeness is closed by a beak-shaped operculum.
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Basal leaves are petiolate. Leaf blade is heart-shaped, with rather denticulater margins. They can reach a length of and a width of . Flowers are purplish red, with a diameter of .
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The leaf-blades are long and wide. The leaf-blade tip is acuminate. The panicle itself is open and linear, and is long by wide. It axis are scabrous with smooth branches.
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The tree is distinguished by Fu (2002) as having "Leaf blade adaxially densely hirsute when young; (later) glabrescent with tufted hairs only remaining in axil of veins. Flowers and fruits February-April".
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A very similar sawfly, Fenusa pumila, also mines birch leaves, but tends to infest young, expanding leaves, and causes crinkling of the leaf blade, whereas P. thomsoni infests mature leaves which remain undistorted.
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The leaves have no sheath or stipules and are alternately arranged along the stem, are divided into a leaf stalk and leaf blade. The leaf blade is twice compounded or very deeply incised, first into three leaflets, themselves palmately compounded or deeply divided (this is called biternate), each leaflet being further divided into segments that themselves are lobed, resulting in seventy to one hundred segments of ¾-3¼ cm wide. At the end of the growing season the leaves may turn vivid red.
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Leaves It has a stout, long petiole on its basal leaves which is shorter than blade and papilliferous. Leaves are leathery, and green on the upper side and muricate on the lower, or papillose or glabrous. The shape of the leaf blade is entire, orbicular, cordate (heart- shaped), reniform-cordate to reniform (kidney-shaped) in shape, long (more usually ), from (more usually ) wide, and with the blade shorter than wide. The leaf blade has five to 7, nearly basal, main veins.
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Leaves are unequal paired; stalk 2–3.5 cm, prickly; leaf blade ovate-oblong, 4–9 × 2–4.5 cm, prickly along veins, margin usually 5–9-lobed or pinnately parted, lobes unequal, sinuate, apex acute.
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Melaleuca undulata was first formally described in 1867 by George Bentham in Flora Australiensis. The specific epithet (undulata) is derived from the Latin undulatus meaning "wavy" "in reference to the leaf blade being wavy".
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The tree is distinguished by a "leaf blade subelliptic, smooth, with tufted hairs in vein axil, base oblique, apex acuminate to narrowly acuminate. Samara smooth, glabrous, wings thin. Fl. Apr.-May, fr. May.-Jun".
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Notable characteristics are the dark stem, whose color extends well up the axis of the leaf blade, a deeply cut acroscopic lobe or pinnule at the base of each pinna, and toothed pinna edges.
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Leaf blade elliptic or ovate-lanceolate, 6–17 × 2–6 cm, leathery, margin sharply coarsely-serrate. Stamen baculate to terete; thecae shorter than connective. Stigma subcapitate. Fruit globose or ovoid, 3–4 mm in diam.
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Mined leaf blade of Phragmites Larva The wingspan is 10–13 mm.Norfolk Moths Adults are on wing from September to April. The larvae feed on Phragmites australis. They mine the leaves of their host plant.
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The petiole is generally bristly. The leaf blade is pinnately toothed or lobed. The fruit is 2–7 mm wide and generally enclosed by the calyx. The fruit itself is spherical to ovoid in shape.
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The variety is distinguished by Fu as having "Leaf blade adaxially glabrous or pubescent on veins. Flowers from floral buds on fascicled cymes. Flowers and fruits March-April".Fu, L., Xin, Y. & Whittemore, A. (2002).
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Ginkgo leaves in summer Ginkgo leaves in autumn The leaves are unique among seed plants, being fan-shaped with veins radiating out into the leaf blade, sometimes bifurcating (splitting), but never anastomosing to form a network. Two veins enter the leaf blade at the base and fork repeatedly in two; this is known as dichotomous venation. The leaves are usually , but sometimes up to long. The old popular name "maidenhair tree" is because the leaves resemble some of the pinnae of the maidenhair fern, Adiantum capillus-veneris.
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Minor leaf veins occur. The leaf blade margins are entire or crenate. The usually inconspicuous flowers are carried above the leaves in clusters. The fertile flowers are mostly hermaphrodites, or they may be functionally male or female.
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It is an erect perennial grass, growing to about 1 m in height. The leaf blade is 60 cm or more long and 12 mm wide; it is flat, strongly ribbed, and scabrous on the upper surface.
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It is 12-15mm wide in the middle, but 5-6mm wide at the end where it joins the leaf blade. The adaxial side of the petiole, the upper surface, is flat, and it has scattered appressed hyaline (glassy-looking) scales, with ciliate hairs along their margins. Both left and right edges of the petiole have short, flat, brown, blunt, triangular, 5-8mm long spines down their entire length, these spines reduce in size as they march towards the leaf blade. The sheath is coloured dark, chocolate brown.
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Large clammyweed is a sticky, unscented annual herb of . It has branched or unbranched, green or purple stems with seated glands and glandular hairs. The long, green or purple leaf stalks are often at an angle with the leaf blade. The leaf blade consists of three narrow, long and only wide, somewhat fleshy leaflets, the right and left halves more or less folded towards each other (or conduplicate) with entire margins, a needle-like tip, the underside of the leaf with many, and the upper side with few glands.
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The leaves are green to slightly greyish in colour, with a flat to V-shaped leaf blade that has a linear to narrowly elliptical outline, usually long (full range ), and wide (rarely up to ). It gradually narrows into the petiole, has a short sharp tip, and the margin is entire or has irregular teeth near the tip. The leaf stem is shorter than the leaf blade, long (rarely up to ), with a groove on the upper side. At the leaf base are two reddish-brown, awl-shaped stipules of long and wide.
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The mature leaves on the vine have three lobes with open upper lateral sinuses (spaces between the lobes) of medium depth. The main vein is slightly longer than the petiole (stalk attaching the leaf blade to the stem), and the petiole sinus opens widely. Between the veins on the underside of both the mature and young leaf there are dense hairs that lie flat against the surface. The teeth on the edge of the leaf blade are convex on both sides, medium in size, and short relative to their width.
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The length of a leaf-blade is long and wide. Their panicle is linear, open, secund and is in length. They can either be long or . Branches have fertile spikelets which are pediceled and are solitary as well.
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Bacopa monnieri in Hyderabad, India. They are annual or perennial, with decumbent or erect stems. The leaves are opposite or whorled, and sessile. The leaf blade is regular, round to linear, and the venation is palmate or pinnate.
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Homalosorus pycnocarpos grows from creeping stems. Its clustered fronds grow to about long and wide. The leaf blade is oblong- lanceolate and once-pinnate. The pinnae are linear and either more-or-less entire or with shallow indentations.
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Pinguicula lutea is a perennial herbaceous plant. The leaves of P. lutea are yellowish-green basal rosettes. The simple shape leaf blade displaces from ovule to oblong.eNature, Yellow Butterwort, 2007 P. lutea has curved leaves and pointed tip.
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Also, they have more of a pinched shaped seed. Their leaves are lobed but not separated into leaflets. There is one leaf per node along the stem; the edge of the leaf blade depends, some have teeth and lobes.
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The lamina or leaf blade is petiolate, oblong- lanceolate in shape, and up to 30 cm long by 9 cm wide.Kurata, S. 1976. Nepenthes of Mount Kinabalu. Sabah National Parks Publications No. 2, Sabah National Parks Trustees, Kota Kinabalu.
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The leaf-blades are flat and are long by wide. The surface of a leaf-blade is ribbed and is rough as well. The panicle is open, lanceolate, is long. The main panicle branches are ascending and are long.
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In the event of injury to the bark, a milky juice is released. The leaves are alternate and spirally arranged. They are gummy and thick and are divided into a petiole and a leaf blade. The petiole is long.
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The species petioles are long while the margins are papery, yellow in colour, and are long. It legume is oblong, swollen and is long. The leaf blade surface is shiny and hairless. The raceme is inflorescenced and is with many flowers.
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The mealycup sage reaches stature heights of 60 to 90 cm. The shape of the leaf blade varies from ovate- lanceolate to lanceolate. The inflorescence axis forms a blue, rarely a white hair. The truncated calyx has very short calyx teeth.
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Corymbia scabrida is a tree that typically grows to a height of and forms a lignotuber. It has tessellated, pale brown to yellow-brown or orange bark on the trunk and branches. Young plants and coppice regrowth have more or less egg-shaped leaves that are long, wide and hairy with the petiole attached to the underside of the leaf blade. The crown of the tree has both intermediate and juvenile leaves that are the same shade of dull greyish green on both sides, long, wide and rough with a petiole long attached to the underside of the leaf blade.
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The tough, parallel- veined leaves are divided into leaf sheath and leaf blade. The white to brownish, relatively thick, durable leaf sheath is 3 to 4 centimeters wide and egg-shaped with a length and width of 3 to 4 centimeters with a finely toothed edge. The leaf sheaths are preserved for a long time and form a bulbous protective covering on the plant base. The simple, early balding leaf blade is 60 to 70 centimeters long and 1 to 1.5 centimeters wide at the base of the blade and is narrow-linear with a long, pointed upper end.
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Nepenthes of Borneo. Natural History Publications (Borneo), Kota Kinabalu. A rosette plant from Sulawesi The leaves of this species are sessile. The lamina or leaf blade is lanceolate to elliptic in shape and up to 15 cm long by 3 cm wide.
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The species rhizomes are elongated. The culms are long with leaf-blades being of in length and wide. The leaf-blade bottom is pubescent, rough and scaberulous. It has an open panicle which is both effuse and elliptic and is long and wide.
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This palm species has a trunk high, and the leaves are even larger, with petioles up to long and the leaf blade of in length. The plant flowers and fruits only once, at between 15 and 30 years of age, and then dies.
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It is drought tolerant and grows in areas with rainfall of per year. The concolorous, glossy, green adult leaves have an alternate arrangement. The leaf blade has a lanceolate shape and are long and wide. The unbranched inflorescences have an axillary arrangement.
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The alternate or opposite leaves are petiolate. Their thin or slightly fleshy leaf blade is linear, rhombic or triangular-hastate, with entire or dentate or lobed margins. Inflorescences are standing terminal and lateral. They consist of spicately or paniculately arranged glomerules of flowers.
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The stem is woody, sparsely prickly, and long. Petiole is long; leaf blade is elliptic to orbicular, long and wide, sometimes wider. Berries are red, globose, and in diameter. Kaempferol 7-O-glucoside, a flavonol glucoside, can be found in S. china.
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The pale glossy to dull leaf blade is cm long and wide. Near the leaf margins are yellow crystal cells ("cystolites"). The two membranous, deciduous stipules are not fused, lanceolate and (rarely to ) long. Wolverton, BC (1996) How to Grow Fresh Air .
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Cosmopterix orichalcea is a moth of the family Cosmopterigidae. It is known from most of Europe (except the Balkan Peninsula) east to Japan. A mined leaf blade of Festuca arundinacea Larva The wingspan is about 9 mm.UKmoths Adults are on wing from August to May.
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Eragrostis parviflora is a widespread species of grass known as weeping lovegrass. Growing to metres tall, it may be found in many parts of Australia and New Caledonia. Leaves are strongly ribbed, hairless or with marginal hairs; the leaf blade may be flat or inrolled.
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The leaf blade is inrolled from the margin on the upper surface. Stems are rigid and erect. Branchlets containing the flowering heads emerge from axils at the main bracts. This branchlet has a spike-like arrangement of numerous, yellow or brown, clusters of flowerheads.
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It lays eggs along the middle of a leaf blade and folds the leaf, sandwiching the eggs inside. Its nest is attached to a branch suspended over a stream, so the hatching tadpoles drop into the water.Frazer, J.F.D. (1973) Amphibians. Wykeham Publications, London, pp.75.
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Phytomyza stolonigena is a leaf mining fly in the family Agromyzidae, whose larvae burrow into leaves of Ranunculus. The larvae of the fly make characteristic mines in Ranunculus leaves; they mine in the petiole, making single corridors that fan out into the leaf blade.
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It is an annual herb growing decumbent to erect, up to 28 centimeters tall. It is glandular and coated in short, stiff hairs. The leaves are conspicuously rounded and have scalloped edges or dull teeth. The round leaf blade is borne on a petiole.
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Leaf of Mikania natalensis Mikania natalensis is a herbaceous, vigorous perennial climber. The leaves are opposite and well spaced. The leaf stalk is up to 30 mm long. The leaf blade is about 80 mm by 40 mm, triangular, long-pointed, with pointed backward extensions.
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Turmeric farm on Deccan Plateau Turmeric is a perennial herbaceous plant that reaches up to tall. Highly branched, yellow to orange, cylindrical, aromatic rhizomes are found. The leaves are alternate and arranged in two rows. They are divided into leaf sheath, petiole, and leaf blade.
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The slender foliage has a silvery coloration. The dull, green, thin, concolorous adult leaves have a disjunct arrangement. The leaf blade has a linear or narrow lanceolate shape and is falcate, acute and basally tapered. Leaves are supported on narrowly flattened or channelled petioles.
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The basal secondary vein pair is weakly formed, angling off the primary vein at an 80° angle and each have seven external veins branching off the basal side. The petiole of the leaf is slightly cordate, being bracketed on each side by the leaf blade.
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Adders-tongues are so-called because the spore-bearing stalk is thought to resemble a snake's tongue. Each plant typically sends up a small, undivided leaf blade with netted venation, and the spore stalk forks from the leaf stalk, terminating in sporangia which are partially concealed within a structure with slit sides. When the leaf blade is present, there is not always a spore stalk present, and the plants do not always send up a leaf, sometimes going for a year to a period of years living only under the soil, nourished by association with soil fungi. The plant grows from a central, budding, fleshy structure with fleshy, radiating roots.
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The leaves range from 30 to 50 cm in length, and vary from generally linear to egg-shaped, coming to a point at the tip. The leaf blade is cut into pinnae; the lower and basal pinnae are sometimes cut again into pinnules in the specimens wider at the base. The stalk of the leaf, below the blade (the stipe) may have a few short soft hairs and/or scales on the upper side, or be completely hairless. The stem passing through the leaf blade (the rachis) always has such hairs and/or scales on the upper side, but these do not usually extend to the rest of the rachis.
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Its cotyledons are broadly spathulate, margins marked with dark 'oil' glands, petioles relatively long and slender. At the tenth leaf stage: 'oil' glands appear to be very dark, visible in transmitted light and on the underside of the leaf blade. Seeds are susceptible to insect attack.
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Adults have been recorded on wing May and from June to August. The larvae feed on Arnica cordifolia. They mine the leaves of their host plant. The mine is linear and has a somewhat winding course on the leaf blade, but later follows the leaf margin.
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The leaf blade is entire in its centre, and almost round in outline. It is regularly divided to about half of the length and 1.2 metres in diameter. The leaf segments are forked, but not deeply, at their ends. The leaf segments have one main nerve.
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The species in genus Halimione are annual or perennial herbs with silvery grey stems and leaves. Their stems grow prostrate, ascending or erect. The leaves are opposite in lower part and alternate in upper part of the plants. The leaf blade is oblong with entire margins.
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The tree grows up to 25 meters in height. The bark is gray with fissures. Leaf blade is obovate elliptic with light green midrib and dense black dots at under surface. Leaf apex has a clear mucronate spike and leaf stalk is 2–3 cm long.
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It is an slender perennial tufted grass, growing to about 45 cm in height. The leaf blade grows up to 40 in length and 3.5 mm wide, or is tightly inrolled. The panicle is erect, slightly branched, 5–10 cm long and 1–2.3 cm wide.
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Elachista tetragonella is a moth of the family Elachistidae. It is found from Fennoscandia to Spain and Italy and from France to Bulgaria. A sprig of Carex montana exhibiting a mined leaf blade Larva The wingspan is . Adults are on wing in January and again in June.
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The leaf blade is wavy and venation is conspicuous with several longitudinal veins. New growth is an attractive bronze-brown colour. The solitary inflorescence consists of 35–40 strongly scented cream-white flowers in clusters in the leaf axils. Each flower is on a smooth stalk long.
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The leaf blade is simple, and sometimes has three pointed lobes, or rarely, five. It is thickly leathery and its margin is entire. The venation is palmate, with the secondary veins radiating from the apex of the petiole. The stipules are large and coherent; soon falling away.
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Agonis baxteri is a shrub that is native to Western Australia. The spindly upright shrub typically grows to a height of . The leaves are dark green in colour and have a prominent mid vein. The leaf blade is approximately in length with an elliptical to oval shape.
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The hindwings are brownish gray. The larvae feed on Tibouchina barbigera. They create a prosoplasmatic histioid gall which is fleshy when young, but becomes hard like a nut shell when mature and dry. It is usually made on leaf insertion with stalk or on leaf blade.
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The trunk is straight and 50 to 90 cm in diameter at breast height. The leaves are arranged alternately in two rows along the stem. The leaf blade is elliptic in shape and the margin is entire. The leaves appear simple, but are actually compound and unifoliate.
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The sheaths remain at the basal tuft when dead. The ligules measure . The capillary leaf blade are long and soft, measuring long and wide, and arise from the basal tuft. The inflorescences are typically cylindrical or ovoid panicles that are long, though they can occasionally be racemes.
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Eggs are singly laid, 20–30 cm above the ground, on the upperside leaf blade of Molinia caerulea or purple moor grass. The eggs are tiny, white, and dome- shaped. The eggs are laid in early June and it takes two to three weeks before it hatches.
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Pennisetum clandestinum is a rhizomatous grass with matted roots and a grass-like or herbaceous habit. The leaves are green, flattened or upwardly folded along the midrib, long, and wide. The apex of the leaf blade is obtuse. It occurs in sandy soil and reaches a height of between .
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The leaves of Pachypodium baronii are confined to the apices of the branchlets. The leaves are petiolate, meaning that they bear a stalk that attaches to the stem and to the leaf blade. The petiole is a pale reddish-green about long. It is pubescent, or hairy-like.
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The leaf blade has a lanceolate shape that tapers to a fine point. The blade is typically in length with a width of . The simple axillary inflorescences contain 7 to 11 flowers. The fruits that appear later have an ovoid to globose shape and are about long and wide.
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The basal leaves are often forming a rosette. The leaf blade is triangular-hastate to ovate, sometimes with elongated lobes, with entire or dentate margins and an acute apex. The plants are usually dioecious, (rarely monoecious). The male flowers are in glomerules forming interrupted terminal spike-like panicles.
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Lipandra polysperma is a non-aromatic, glabrous annual herb. The stems grow erect to ascending or prostrate and are branched with usually alternate, basally sometimes nearly opposite branches. The alternate leaves consist of a petiole and a simple blade. The leaf blade is thin, ovate-elliptic, with entire margins.
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The species is tall with either yellow or yellowish-brown colour. Leaf blade is elliptic and ovate with a diameter of by . Female species have a subglobose inflorescence which is also oblong with a diameter of by . It peduncle is long while its bracts can be as long as .
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The leaf blade is dorsiventral, medium-sized to large and disposed oppositely or in a whorl and with entire margin. The leaf venation is pinnate, with numerous veins ending in a marginal vein. Phyllotaxy is whorled i.e. two or more leaves arises at a node and form a whorl .
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The species in genus Chenopodiastrum are non-aromatic annual herbs. Young plants have vesicular trichomes, that later collapse and fall down, thus plants becoming glabrescent. Stems grow erect, with lateral branches. The alternate leaves have a petiole and a thickish triangular, ovate, rhombic-ovate to lanceolate leaf blade.
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The lamina or leaf blade is obovate-lanceolate to lanceolate in shape. It measure up to 30 cm in length by 7.5 cm in width. The apex of the lamina is rounded or shortly acuminate and may be slightly peltate. The lamina is abruptly attenuate towards the base.
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The species is perennial and is caespitose as well. It culms are long with tubular The leaf-sheaths which are closed on one side. The leaf-blades are convolute, erect, and are long and wide. The surface of a leaf-blade is scabrous while the membrane is eciliated.
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The leaf blade has a lanceolate shape that is in length and wide with a base tapering to petiole. It blooms between October and December and produces crimson-red flowers. Each axillary unbranched inflorescence is often down-turned and in length and occurs groups of seven per umbel.
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The stem is erect, reddish brown and often single head. It is hairy silvery-woolly, bare later and usually has 2 leaves on small scales. The leaves are basal, long-stalked, leathery, coarse and glossy dark green, the underside is lighter. The leaf blade is heart-kidney-shaped.
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Leaves are coriaceous and petiolate. The lamina (leaf blade) varies in shape from linear to slightly lanceolate. It reaches up to 40 cm in length by 5 cm in width. It has an acute or obtuse apex and a slightly attenuate base that narrows to form a winged petiole.
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Arrows indicating fragmentary vegetative leaves at nodes. A-056. Scale bar = 1 cm. Fig. 33. Adaxial view of a bract attached to a strobilar axis showing leaf blade bearing a distal segment (white arrow) and many marginal elongate segments (black arrow). Hu-22. Scale bar = 2 mm. Fig. 34.
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The leaf blade is broad, while the base is suddenly narrowed and of an ovate or lanceolate lobed shape. The leaves are in alternate arrangement throughout the stem. In addition, it has a broad sinus base with "dorsifixed pubescence" underneath. The petiole is about 1–2 cm long.
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The fleshy, bare, obovate, wedge-shaped leaf blade is 3 to 9 centimetres long and 1.8 to 4 centimetres wide. The sharp-edged leaf margins are often reddish. Numerous varieties and cultivars have been selected, of which C. ovata 'Hummel's Sunset' has gained the Royal Horticultural Society's Award of Garden Merit.
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At first glance most think there are two separate fronds. The fertile stalk is joined to the stalk of sterile leaf blade near the rhizome. The sporangia resemble grapes which is why these types of ferns are known as grape ferns. The leaves on a sterile frond have lacy edges.
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The leaves are palmately lobed and roughly shaped like a hand. They grow up to 30 cm wide and the margins are entire (no serration). The fertile fronds are a set of small tapering sporophores that bear the spores. There are several to many at the base of each leaf blade.
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The stem is prickly and stocky. Petiole , densely covered with setae. The leaf blade approximately circular to oblate, the leaf is approximately wide, the two surfaces are usually 5–7 lobed. The shape of the lobe is triangular or broadly triangular, base cordate, margin irregularly serrate, apex acute to slightly acuminate.
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They mine the stem leaves of their host plant. The mine starts as an inconspicuous linear mine along the margin of the leaf. The larva vacates this mine, entering a leaf near the tip and mining downward, consuming most of the parenchyma. This second mine is extends across the leaf blade.
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The stamens and the stylus are densely hairy. The mostly four to nine in undergraduate rosettes arranged leaves are divided into petiole and leaf blade. The limb of the wild species is green but purple cultivars have been selected for horticulture. The petiole, soft, whitish, is 15 to 25 cm long.
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The plants usually have underground rhizomes or tubers. The leaves are arranged in two rows with the petioles having a sheathing base. The leaf blade is narrow or broad with pinnate veins running parallel to the midrib. The petiole may be winged, and swollen into a pulvinus at the base.
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The hypanthium is 3–5 mm long. Sepals are more or less narrowly triangular, 1-2.6 times as long as wide. There are 14-20 stamens with purple anthers. Apart from the serrated leaf blade lobe margins, the number of styles or pyrenes is a second useful characteristic trait for identification.
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The leaf blade is in length and often curved. White flowers appear in mid summer to mid autumn between January to April. Buds that are almost stalkless appear as clusters in groups of seven. The buds have swollen caps, said to resemble a small ice cream cone, that are around long.
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The leaves are thin and needle-like, linear, flattened, smooth in texture and arranged pointing upwards on the stem. They are in length, 2 - 3mm in width, and terminate in a soft black acuminate point. They are glabrous and glaucous-green in colour. The petiolar region only tapers slightly into the leaf blade.
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The leaf blade is divided into leaflets which are subdivided into smaller segments which may be lobed or deeply cut. The inflorescence is a compound umbel of many flowers with bright white to red- tinged petals. Frequently the plant grows on acidic soils. It is able to tolerate both dry and damp environments.
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Young leaves are pressed tightly together. The obovate to oblate lanceolate leaf blade is pointed toward its apex and wedge-shaped at the base. It is 5 to 15 inches long, 1 to 4.5 inches wide and 1.5 to 3 millimeters thick. The green, usually purple-colored, glossy leaf surface is almost bare.
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The leaves have variously shaped blades borne on long petioles. The blades are 5 to 15 centimeters wide and may be hairless, hairy, or waxy in texture. The leaf blades are often divided into narrow lobes or dissected into small segments. The shape of the leaf blade differentiates the two subspecies; ssp.
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There is a hairy swelling known as a pulvinus at the base of each leaf-blade, which acts as a hinge. The flowers are in clusters growing in the axils of the leaves. They have small, rusty-brown, hairy bracts. The calyx has four to six lobes and there are no petals.
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The extension of the stem (this part called the rachis) continues growth downward where a terminal male flower grows. The leaves originate from a pseudostem and unroll to show a leaf blade with two lamina halves.Rouard, Mathieu, et al. “Morphology of Banana Plant.” The Banana Knowledge Platform of the ProMusa Network, Feb.
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The species' bud scales are efarinose, ovate to oblong and are long. The leaves form a rosette which have winged petiole that is long. It have even longer leaf blade, measuring , efarinose, puberulous and is ovate to deltoid. The base itself is cordate and subsagittate with irregular margins, coarse dentate and acute apex.
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Leaf stalks are 6 to 25 mm long, with a bend at the junction of the leaf blade. Venation is prominent on both sides of the leaf. Cream flowers form from October to November, in singles or on short racemes. A woody capsule matures from February to June, 15 to 20 mm long.
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There are about 60 pairs of leaves that are slightly undulate (wavy) in texture. The shape is oblong to lanceolate (narrow oval) and tapered to an acute point. Sometimes the leaf can be obtuse in shape. The lamina also known as the leaf blade, is round and then narrows towards the apex.
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The alternate leaves are mostly petiolate, (the upper ones sometimes sessile). The leaf blade is linear, lanceolate, oblanceolate, ovate, or elliptic, often pinnately lobed, with cuneate or truncate base, anentire, dentate, or serrate margins. The inflorescences are terminal, loose, simple or compound cymes or dense axillary glomerules. Bracts are absent or reduced.
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Severe outbreaks of the walking stick, Diapheromera femorata, have occurred in the Ouachita Mountains of Arkansas and Oklahoma. The insects eat the entire leaf blade. In the event of heavy outbreaks, entire stands of trees can be completely denuded. Continuous defoliation over several years often results in the death of the tree.
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Scadoxus membranaceus is the smallest of the species in the genus Scadoxus. It grows from a bulb from which three or four thin leaves appear. The leaf stalk (petiole) is long and the leaf blade long. The flowers are borne in an umbel about across on the end of a leafless stem (scape).
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The leaf blade is long and wide. The flowers are borne singly in leaf axils on stalks, long. There are 5 cream-coloured, overlapping, hairy sepals which have a greenish tinge but turn reddish-brown after flowering. The sepals are different shapes, varying from lance-shaped to egg- shaped and are long.
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The leaf shape and proliferating tips easily distinguish A. rhizophyllum from most other ferns. Its hybrid descendants share the long-attenuate leaf tip, but are more deeply lobed. An artificial backcross between A. rhizophyllum and A. tutwilerae was closer to A. rhizophyllum in morphology, but still remained some lobes in the basal part of the blade, had a shallowly undulating, rather than smoothly curved, leaf edge in the apical part, showed a maroon color in the stipe up to the base of the leaf blade, and possessed the abortive spores of a sterile hybrid. A. ruprechtii, the Asian walking fern, also possesses attenuate, proliferating tips, but has a lanceolate leaf blade, which tapers to a wedge at the base rather than forming a heart shape.
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The frond of Ophioglossum azoricum consists of a single, pointed leaf blade and a narrow pointed spore-bearing spike on a stalk. The spike has about 4-18 segments on each side, each of which opens up when ripe to release spores. The sterile blades are broadest near the middle and taper towards both ends.
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Hence, the pitchers are modified leaves and not specialised flowers as is often believed. The green structure most similar to a normal leaf is specifically known as the lamina or leaf blade. The leaves of N. rajah are very distinctive and reach a large size. They are leathery in texture with a wavy outer margin.
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The species is perennial and caespitose with elongated rhizomes and long culms which are also erect. The leaf-sheaths are keelless and have a glabrous surface. It leaf-blades are by and are flat and stiff. The leaf-blade also have a ribbed and pubescent surface with scaberulous margins the apex of which is filiformed.
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Leaf-blades could be either filiform or linear and sometimes even involute or convolute depending on the gender. The leaves themselves are long and wide. As with leaf-sheaths the leaf-blades are also pilose but hairy sometimes on one side or on both (depending on the gender). The leaf-blade margins are always ciliated.
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It is a tree reaching 15 meters in height. Its petioles are 10-13 millimeters long. Its leaves are 15-25 by 7-12 centimeters with round or gently pointed tips. The base of the leaves often form a small notch at the attachment to the petiole giving the leaf blade a heart shape.
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The larvae feed on the leaves of oak, especially Quercus agrifolia (coast live oak). Young larvae feed between veins on the lower leaf surface. Although the upper leaf surface is left intact, it dries out and turns brown. Larvae in later instars chew completely through the leaf blade, often leaving only major leaf veins.
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Nepenthes izumiae is a climbing plant growing to a height of 8 m. The stem ranges in colour from green to reddish. The lamina (leaf blade) varies in shape and may be linear, lanceolate, or spathulate. It measures up to 28 cm in length by 8 cm in width and may have a frilled margin.
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The stem of N. beccariana is glabrous and 10 to 12 mm wide. A lower pitcher of N. cf. beccariana with sympatric N. ampullaria and N. gracilis Leaves are subcoriaceous and petiolate. The lamina or leaf blade is elliptic-lanceolate to obovate in shape. It is up to 40 cm long by 9 cm wide.
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The undersides are hairy, the upper surfaces somewhat less so. The leaf blade is roughly oval, spine-toothed, and less than 4 centimeters (1.6 inches)long. The fruit is an acorn with a thin cap 1 to 1.5 centimeters (0.4-0.6 inch) wide and a nut 2 to 3 centimeters (0.8-1.2 inches) long.
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Royal Horticultural Society database search for S. graminifolium 'Little Saphire'. Accessed 21 April 2007. The epithet Little Saphire is derived from the bright blue foliage that distinguishes this cultivar from the type species. Tiny Trina has a deeper flower color and leaves that are a darker shade of green with varying leaf blade widths.
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The leaves do not have stipules, but there may be a pair of glands at base of leafstalks and flowerstalks. The leaf may be seated or have a leafstalk. The leaf blade is usually simple, entire or dissected, rarely trifoliolate or pinnately compound. A leaf rosette at the base may be present or absent.
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Example of spreite in a Diplocraterion burrow (at left) from the Silurian Tuscarora Formation in Pennsylvania. Diagram showing the differences between meniscate and spreiten burrows. Modified from Chamberlain (1978). Spreite, meaning leaf-blade in German (or spreiten, the plural form in German) is a stacked, curved, layered structure that is characteristic of certain trace fossils.
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Ammannia multiflora is an erect, branched herb which grows to a height of about 60 cm. The leaves are opposite, and without stalks (sessile). The leaf blade is oblong-linear to narrowly lanceolate or oblanceolate, and from 0.5 to 5 cm long, with a heart-shaped base. The inflorescences occur in short dense clusters.
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P. japonicum has a stout umbellifer of 30–100 cm and is essentially glabrous. The stem is frequently flexuous. The leaf blade is broadly ovate-triangular. It size is 35 x 25 cm. It is thinly coriaceous, bearing 1-2 ternate(s). leaflets are ovate-orbicular, 3-parted, 7–9 cm broad and glaucous.
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The different types of trichomes are an indicator of adaptation to a particular environment. On the leaf blade of K. beharensis there are trichomes of the non-glandular, bushy three-branched type. This type of trichome is dead, with evidence of tannin. K. beharensis trichomes are also characterized by striped cuticular ornamentation on their surface.
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A petiole is arising from the base of each leaf blade. It blooms later than some herbaceous perennials, in mid to late summer. The flowers are tubular 2-lipped blooms, with a small yellow beard inside each lower lip. There is no floral scent and are cross pollinated by bees and attracted to butterflies.
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The leaves of Curio archeri are typically blue-green and laterally flattened. A small, low-growing succulent, with rhizomes and a few short, erect stems, with the leaves concentrated at the tip of top of each stem. The leaves are blue-green, pruinose, and typically flattened laterally. Each side of the leaf blade has several translucent lines.
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The base of the leaf blade is wedge- shaped to tapered. The leaf surface is glabrous or dotted on the underside of the midrib or slightly glandular hairy. The top is dark green, dull to shiny, the underside is light green. From the midrib go five to eleven side veins that run straight or in a wide arc.
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Scarp darwinia is a densely branched, glabrous, rounded shrub growing to high. It has thin red branches with the leaf bases having wings that extend down the stems. Its leaves have a petiole less than long, and a leaf blade long, linear in shape and triangular in cross-section. The tip of the leaves is sharply pointed.
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Aponogeton capuronii has a rhizome up to 10 x 2-cm thick. Leaf blade 7–20 cm long petiolate, slightly leathery, 20–40 cm long and 3-4.5(-8) cm wide, flat or highly bullate and undulate, dark olive-green coloring. Apex acute, base round, cuneate or slightly cordate. Peduncle 40-60(-300) cm long, swollen toward the inflorescence.
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Aponogeton bernerianus is an aquatic plant from eastern Madagascar. It has a 3 cm thick tuber or thick and branchy rhizome. Leaf blade up to 13 cm petiolate, strap-shaped, highly bullate and undulate, up to 50(-120) cm long and 1.5-6.5(-10) cm wide, dark green coloration. Peduncle up to 75 cm long, tapering towards the inflorescence.
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The base of the stem may have a reddish tinge and it is free of leaves by the time the plant blooms. The leaves are somewhat circular or pentagonal in outline and are divided into a few wedge-shaped lobes. The leaf blade is borne on a petiole up to 15 centimeters long. Flowering occurs between July and September.
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Branchlets densely grayish pilose. Petiole to 7 mm, pilose; leaf blade narrowly elliptic, 8-14.5 X ca. 5 cm, abaxially densely pilose, base subrounded to cordate, margin entire, apex acuminate; veins abaxially prominent, pilose when young. Cymes 5-7-flowered, densely grayish pilose; peduncle 1–2 cm; involucral bracts 4, narrowly oblong, 2.5-3 X 0.5-0.8 cm.
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Inflorescence of Patellifolia procumbens Fruit of Patellifolia patellaris Patellifolia are annual or perennial herbs, growing erect or often procumbent. The alternate leaves have a petiole, their leaf blade is heart-shaped or hastate. The spike-like inflorescences consist of glomerules of one to three flowers sitting in the axils of leaf-like bracts. The free flowers are hermaphrodite.
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The sheets are arranged alternate. They have mostly smooth, glossy, lauroid type leaves. Leaves alternate, pinninerved. Leaves alternate; petiole , covered with pubescence; leaf blade oblong-lanceolate or oblong-oblanceolate, 5–10 × 2–3 cm, glabrous abaxially, long midrib pubescent adaxially, lateral veins 8–12 pairs, conspicuously reticulate-veined on both surfaces, base cuneate, apex acute or acuminate.
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Micromyrtus grandis grows as a shrub with an erect habit, reaching 1–4 metres tall. The orange bark is stringy and shed in ribbons, which frequently curl. The tiny leaves are 0.5 to 4 mm long by 0.5 to 1.5 mm wide. When held up to the light, their oil dots can be clearly seen in the leaf blade.
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In some localities, Polytrichum alpinum may be confused with Pogonatum urnigerum. Key distinguishing features are that the spore capsules of the Alpine moss are at the bottom of large single-celled stomata; the capsule outer wall has smooth cells; the leaf sheath is much longer than that of Pogonatum urnigerum and the leaf blade is narrower and more spiky.
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The branchlets are covered in short to long brown densely matted woolly hairs. The leaves are 3-4 whorled, but are sometimes opposite. The leaf blade varies from 1.5-13.5 x 0.6- 5.8 cm, and is 1.8-4.8 x as long as wide. It has 4-8 pairs of lateral nerves and its tertiary venation is reticulate.
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The basal leaves are often long-petiolate and forming a rosette. The leaf blade is thin oder slightly fleshy, and may be triangular, triangular- hastate, triangular-lanceolate, or spathulate, with entire to dentate margins. The inflorescences consist of spicately arranged compact glomerules of flowers, ebracteate or in the axils of small leaf-like bracts. Flowers are bisexual or pistillate.
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The plant is tall with white coloured branches. It has long petioles and has a long leaf blade that is lanceolate, ovate, papery, and even elliptic. The female inflorescences a pendulous and cylindric raceme, that, by time it matures, reaches a diameter of by . The peduncle is long while the diameter of the bracts is only .
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American lotus is an emergent aquatic plant. It grows in lakes and swamps, as well as areas subject to flooding. The roots are anchored in the mud, but the leaves and flowers emerge above the water's surface. The petioles of the leaves may extend as much as and end in a round leaf blade in diameter.
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It was not discovered in the wild until 1971, when it was found by Kerry S. Walter at Havana Glen, Alabama, the only known wild site for Tutwiler's spleenwort. Walter named it for Kathryn E. Boydston, an expert in fern culture. Except for the tip of its leaf blade, it largely resembles its ebony spleenwort parent.
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The lamina (leaf blade) varies in shape and may be linear, lanceolate, or slightly spathulate. It measures up to 16 cm in length by 3 cm in width. The lamina has an acute or obtuse apex and an attenuate base that clasps the stem. Two to three longitudinal veins are present on either side of the midrib.
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The leaf blade is wide compared to its length and the secondary venation is subpalmate. In Parnassia, the leaves are crowded into a basal rosette with a few cauline leaves above. The leaves are all cauline in Lepuropetalon. In both genera, the lower cauline leaves are pseudosessile, which means that the petioles are adnate to the stems.
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There are apparently two morphs, a narrow leaf and a wide leaf, rather than a continuous range. The narrow leaf type is found closer to shore where it is exposed more often. The wide leaf type is found in deeper areas with cloudier waters. Plants that receive less light may need more leaf blade area to perform enough photosynthesis.
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Plants from western parts of its natural distribution area normally have narrower leaf blade lobes and narrower outer phyllaries, these plants have been segregated out as C. wrightii or as C. basalis var. wrightii in the past by some authorities. The species range in the eastern part of the USA is increasing as plants are used in landscaping.
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Leaf blade ovate, elliptic, obovate-elliptic, oblong, or oblong-lanceolate; leathery to thinly leathery, pale green or glaucescent green and reddish brown glandular punctate. Axillary flowers are pale yellow. There are up to more than 10 in a corymb. The fruit is ellipsoid 2–3.5 cm in diameter and contains long obovate seeds, with a fleshy red outer layer.
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Erysimum siliculosum produced trichomes malpighiaceous throughout, mixed with 3-forked ones on calyx. Stems erect, often branched at base and above. Basal leaves rosulate, often persisting, petiolate; leaf blade filiform to linear, rarely linear-oblanceolate, 1.5–8 cm × 1-2(-5) mm, longitudinally folded, base narrowly attenuate, margin entire, apex acute. Cauline leaves similar to basal.
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Phytopathology 60, 856-860. The deposition of ascospores by wind currents is generally near the tips of the leaves resulting in a distinctive pattern of infection on the leaf extremities. When conidia are the source of the inoculum and these are dislodged by rain, a distinctive line of streaks is produced as water trickles down the leaf blade.
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The leaf margins are normally wavy, however some uncommon forms may also have flat leaf margins. Each leaf blade is typically covered in round, translucent glands, and is connected to a red, approximately 5mm long, leaf stalk. These leaf stalks, also called petioles, can vary in colour and size as a result of environmental conditions and local population trends.
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Hakea dohertyi is an upright linear shrub growing to high. The smaller branches are covered with densely matted silky hairs at flowering time. The leaves are straight, flexible and triangular in cross- section long and about wide. Leaves are smooth with three longitudinal veins at an angle to the leaf blade ending in a sharp point.
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The leaves are arranged in opposite pairs, narrowly egg-shaped and may be coarsely toothed with 6-15 pairs along the leaf blade. The leaves have no stalk, curve downward and are long and wide. The leaves mostly have about seven longitudinal veins and end in a sharp point. The inflorescences grow at the end of each stem.
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Hakea ferruginea is an erect, rounded, non- lignotuberous shrub which typically grows to a height of . The branchlets are hairy and the leaves are arranged alternately. The pale green leaf blade is flat, narrowly to broadly egg-shaped or elliptic and is in length and wide. It blooms from July to November and produces white-cream flowers.
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Myosotis pansa subsp. pansa forms rosettes up to 200 mm across with flowering stems to 300 mm tall. Leaves are spoon-shaped, variable in size. The leaf blade is usually up to 35 mm long by 25 mm wide, covered with short stiff hairs that lie flat, with a petiole as long as the blade of the leaf.
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Basal rosette leaves, alternate, apex acute, base serrate, long stalked, with margin irregularly pinnately lobed; lower and middle cauline leaves have short stiped, margin sharply serrated, leaf blade 1-3 inches long, maximum 0.5 inches wide; upper leaves with narrow base are more linear, lobeless, sparsely serrated or subentire. Leaf hairs and erected stem are columnar pubescent.
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Scaevola repens is a prostrate shrub with branches up to 50 cm long. The leaves are stalkless, and have smooth edges, and may be with or without prominent axillary hairs. The leaf blade is up to 90 mm long by 15 mm wide. The flowers occur in axillary spikes which are up to 30 mm long.
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It is a relatively small-leaved fig. The changeable leaves are simple, entire and stalked. The petiole is long. The young foliage is light green and slightly wavy, the older leaves are green and smooth; the leaf blade is ovate to ovate-lanceolate with wedge-shaped to broadly rounded base and ends with a short dropper tip.
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Hibbertia dentata grows as a twining vine, the stems of which can be up to in length, and trail over rocks and other shrubs. The dark green leaves are ovate, measuring long by wide., and sit on 1 cm long petioles. The apex of the leaf blade can be pointed or blunt, while the leaf margins are toothed.
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Xanthosia atkinsoniana is an erect, perennial herb growing to 60 cm high. It is sparsely hairy, becoming smooth with age. The flowering stems are almost leafless. The leaves (on a petiole of length 2–12 cm) mostly occur at the base of the plant, with the leaf-blade being 2–4 cm by 1.5–4 cm.
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As its common name implies, rice caseworm is one of the major pests of rice throughout the world.Australian Insects Larvae is the infective stage, where they cut leaf tips to make leaf cases. The infestation can be characterized by ladder-like skeletonized tissues in leaves. Larvae completely consume the leaf blade, where only mid rib is visible.
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The light green, scabrous leaves have a ovate to lanceolate shape. The leaf blade is in length and wide. The species is found among vine thickets and tussock grasslands in the Kimberley region of Western Australia where it grows in skeletal sandy soils over laterite or sandstone. It is also found in Queensland, Victoria and New South Wales.
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Nepenthes hamiguitanensis is a climbing plant growing to a height of 4 m. The stem is cylindrical and 8–10 mm in diameter in mature plants; internodes are 4–7 cm long. Leaves of the climbing stem are petiolate. The lamina (leaf blade) is elliptic to oblong and measures up to 25 cm in length by 9 cm width.
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The Petiole is up to 2.5 cm long. The leaf blade is ovate and not lobed (15 cm long by 19 cm wide). There is no leaf nectary. The leaf is palmately 7 nerved, of the same colour on both upper and lower surfaces (concolorous), with a truncate base, an acute apex, and having serrate margins.
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The surface is either smooth or sparsely covered in rough hairs with a network of prominent raised veins. The leaf underside has curled or wrinkled brownish hairs completely covering the leaf blade. The leaf stipules are narrowly egg-shaped, generally hairy and long. The sessile inflorescence consists of 1 or 2 mauve flowers on a stalk long.
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The stem ranges in colour from green to red. Leaves are sessile and coriaceous in texture. The lamina (leaf blade) is obovate, measures up to 31 cm in length by 3 cm in width, and is around 0.5 mm thick. Its apex is acuminate and it is attenuate at the base, clasping the stem for around three- quarters of its circumference.
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Calectasia narragara is an undershrub without stilt roots but with a short rhizome from which it is able to form clones. The roots are clustered, wiry and sand-binding. It grows to a height of about with many very short side branches. Each leaf blade is glabrous except sometimes at the margins, long, wide tapering to a short, sharp point on the end.
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S. calendulace is a prostrate shrub growing to 40 cm high which flowers for most of the year. The stems are covered with hairs lying forwards and flat to the stem (appressed) The leaves are entire and the leaf-blade is up to 80 mm by 27 mm wide. It flowers in terminal spikes. The blue corolla is pubescent outside and bearded inside.
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This eucalypt was first formally described in 1867 by George Bentham who gave it the name Eucalyptus peltata and published the description in Flora Australiensis. In 1995 Ken Hill and Lawrie Johnson changed the name to Corymbia peltata. The specific epithet (peltata) is from the Latin word peltatus meaning peltate, referring to the attachment of the petiole to the leaf blade.
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Illinois Wildflowers This is a perennial herb growing to a maximum height near 1.5 meters. The leaves have blades up to 30 centimeters long borne on petioles up to 35 centimeters in length. The parsley-like leaf blade is divided into serrated, lobed leaflets. The inflorescence is a compound umbel of many flowers with bright white to red- tinged petals.
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The undersides of the leaves (abaxial surface) sometimes exhibited parallel longitudinal ridges and grooves. The free part of the lamina (the leaf blade) was about half the length of the leaves. These fossils are found together with two types of highly distinctive cones (presumed to be female) that show affinities to both Araucariaceae and Cupressaceae (cypresses). However, they have not been described.
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The leaf blade is linear- lanceolate or linear-oblong shape with a length of and a width of . the leaves are glossy, olive-green, dull and grey-green when dried with indistinct veins. It flowers between December and April producing inflorescences with small white flowers. The flowers occur in umbels of 4 to 14 found at the axils of the leaves.
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The tree typically grows to a height of but is mostly smaller with a mallee habit and forms a lignotuber. It has rough and evenly tessellated bark that is pale grey-brown to red-brown to orange-brown in colour. Adult leaves are alternate with petioles that are long. The leaf blade is narrowly lanceolate to lanceolate in shape and long and wide.
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The leaf blade is variable in shape, generally roughly rounded, and up to 2 centimeters long. It has a wavy, bluntly toothed edge and a bumpy, velvety surface coated in woolly fibers and shiny hairs. It is brownish to gray-green to very pale green in color. The knobby inflorescence is lined with woolly gray-green phyllaries with dull points that curve outward.
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The flowers are highly decorative usually with pink-red buds that open to cream-yellow flowers that are around across. The dull, grey-green, thick and concolorous adult leaves have a disjunct arrangement. The leaf blade has a narrow lanceolate to broad lanceolate and is basally tapered. The buds are globose and rostrate, with a calyx calyptrate that sheds early.
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Leaves are sessile and coriaceous in texture. The lamina (leaf blade) is lanceolate-elliptic in shape and reaches 8 cm in length by 1 cm in width, being widest in its distal half. The lamina has an acute apex and is shortly attenuate at the base, clasping the stem for approximately one-third of its circumference. It is not decurrent down the stem.
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The lower petiole or stipe is dark purple to black, shiny and swollen, the upper rachis is dull green. The leaf blade is green and lanceolate, composed of 12 to 23 paired, alternate pinnatifid pinnae. The pinnae are subdivided into 15 to 20 paired segments that are ovate to oblong. The lower rachis is naked for about half its length.
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The scientific name of the species peltatum is derived from the Latin word pelta, a small crescent-shaped shield, and means "shield-bearing", a reference to the shield-like leaves, since the leaf stalk is attached to the centre of the leaf blade. The common name in Afrikaans is "kolsuring" (meaning cabbage sorrel) and refers to acid sap of the plant.
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Dampiera dentata is a perennial herb growing up to 40 cm, with no surface covering except for the inflorescence. The basal leaves are stalkless (sessile) and conspicuously toothed. The leaf blade is 5-16 cm by 3-15 mm. The flowers are stalkless, and arranged in heads which lengthen into spikes which are up to 15 cm long when in fruit.
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Long lanceolate leaves 6-12 inches (15–30 cm) long with an attractive bluish-green upper surface, a light green midrib and side nerves. The underside of the leaves is a deep reddish purple. The leaf stems are short in proportion to the leaf blade. Several forms are sold in the aquarium trade differing in colour and serration of the leaf edge.
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The flat surface is hairless and indistinctly spotted by round resin glands lying in the leaf blade. The broadened leaf base slightly runs down the stem, and is hairless or has a ciliate margin and has woolly hairs in the axil. The floral heads are medium in size. They sit on largely leafless, up to long inflorescence stalks in the typical subspecies.
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The sand leek is a perennial plant with an egg-shaped bulb. The plant produces two to five unstalked leaves, the bases of which are sheath-like. Each leaf blade is linear, 7–20 mm wide, flat with a slight keel, an entire margin and parallel veins. The edges of the leaf and the central vein are rough to the touch.
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Anisoptera costata is an endangered species of plant in the family Dipterocarpaceae. The name costata is derived from Latin (costatus = ribbed) and describes the prominent venation of the leaf blade. A huge emergent tree up to 65 m high, it is found in evergreen and semi-evergreen lowland tropical seasonal forests of Indo-Burma and in mixed dipterocarp forests of Malesia.
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Anisoptera grossivenia is a species of plant in the family Dipterocarpaceae. The name grossivenia is derived from Latin (grossus = an unripe fig and venius = veined) and refers to the purple lateral veins of the leaf blade. A. grossivenia is a tall emergent tree, up to 60 m, found in mixed dipterocarp forest and its ecotone to kerangas forests. It is endemic to Borneo.
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Asplenium × boydstoniae is a small fern, similar to ebony spleenwort. The stem is a shiny dark brown, its color extending almost to the tip of the leaf blade, where it becomes green. Most of the blade is cut into pinnae, but it has an elongated, lobed tip. The fronds of A. × boydstoniae can be up to or long and or wide.
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Pestalotiopsis palmarum is the causative agent of a fungal disease of bananas, coconut and Date palms . The fungus causes leaf spots, petiole/rachis blights and sometimes bud rot of palms. Unlike other leaf spot and blight diseases, Pestalotiopsis palmarun attacks all parts of the leaf from the base to the tip. Whereas most diseases only infect the leaf blade or the leaf petiole.
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Cephalotus follicularis is a small, low growing, herbaceous species. Evergreen leaves appear from underground rhizomes, are simple with an entire leaf blade, and lie close to the ground. The insectivorous leaves are small and have the appearance of moccasins, forming the 'pitcher' of the common name. The pitchers develop a dark red colour in high light levels but stay green in shadier conditions.
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The slender erect perennial shrub typically grows to a height of and has angular branchlets with silver scales present on young growth. The leaves are alternate, a papery silvery pale green colour on short petioles. The leaf blade is a narrow elliptic shape with a length of and a width of . The leaves release a strong mango smell when crushed.
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Nepenthes klossii, like virtually all species in the genus, is a scrambling vine. The stem may climb to a height of several metres. A rosette plant bearing a number of lower pitchers The leaves of the climbing stem are coriaceous and petiolate. The lamina or leaf blade is oblong-lanceolate in shape and up to 25 cm long by 9 cm wide.
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Crane and Stockey noted B. leopoldae to be the oldest reproductive plus vegetative record for a Betula species at that time. A B. leopoldae leaf from the Klondike mountain formation was figured by Conrad Labandeira in 2002 which displayed distinct interior foliage feeding damage from insect feeding, in which a series of four leaf blade sections had been removed between successive secondary veins.
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It remains smooth but becomes a pale grey, grey-brown, white or pinkish to coppery colour with ribbons on the upper branches. The thick, concolorous, glossy, green adult leaves have an alternate arrangement. The leaf blade has a lanceolate to broadly lanceolate to ovate-elliptic shape and is in length and with the base tapering evenly to petiole. Petioles are in length.
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Tall fescue is a long-lived perennial bunchgrass species. Photosynthesis occurs throughout the leaves, which form bunches and are thick and wide with prominent veins running parallel the entire length of the blade. The blades have a "toothed" edge which can be felt if fingers are run down the edge of the leaf blade. The underside of the leaf may be shiny.
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The bark sheds from the tree in short ribbons or as small polygonal flakes. The concolorous, glossy green adult leaves have an opposite to sub-opposite arrangement. The leaves are supported on petioles which are long. The leaf blade has a narrowly lanceolate to lanceolate shape and is in length and are wide with a base that tapers to the petiole.
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Atriplex stipitata is an erect, generally dioecious, shrub which grows to a metre in height. Its leaves are elliptic and entire, with the apices either obtuse or rounded. The leaf blade is 7 to 25 mm long on a petiole which is 2 to 3 mm long. Male flowers form disjunct spikes, and the well-spaced clusters of female flowers form slender spikes.
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Immediately after the egg hatches, the larva begins to make its own shelter by rolling a leaf blade with silk into the shape of a tube. It leaves the shelter to eat surrounding leaves. The caterpillar molts five times before it is ready to pupate. In between the molting the caterpillar makes a new shelter to accommodate for its growing size.
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They are compact and usually do not exceed in height. They vary considerably in appearance. Some have threadlike, trailing stems and some have fleshy, stout stems. The leaves are smooth and fleshy and may be oval with the leafstalk at or near the center of the leaf blade, or they may be heart-shaped or lance-shaped; their size may vary from long.
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Homoranthus biflorus is an erect shrub which grows to a height of . It has glabrous, linear, more or less cylinder-shaped leaves with a pointed tip. The leaf blade is linear in side view, less than thick. Flowers appear singly or in pairs and are red, yellow, or greenish-yellow with petals about long surrounding the base of a style which is long.
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The leaf blade is lanceolate in shape and basally tapered with a length of and a width of . When the tree blooms in December it produces simple axillary conflorescences with three to seven flowered umbellasters and terete peduncles and white to cream flowers. Flowers have a diameter of approximately . Fruit appear later which are a cylindrical cup shaped woody capsules long and wide containing grey seeds.
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Carex rosea flowers in the spring, and it has evergreen leaves. The styles of this Carex roseae, the stalk connecting the stigma to the ovary, are very distinctively curled, which helps to differentiate this species from other plants. The stigmas range from 0.07-0.10 millimeters thick, while the leaves are almost 1/8 millimeters wide. The width of the stem leaf blade ranges from 1.8-2.6 millimeters.
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The leaves are distributed on the branches or as a group at the branch tips. The hairless petioles have a length of 5 to 12 mm. The firmly membranous to almost leathery leaf blade is 6.5 to 16 cm long and 2 to 6.5 cm wide, elongated to elongate- lanceolate, rarely elliptic-oblong to ovate-elongated. The tip is pointed to short pointed, rarely blunted to notched.
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The adult beetle feeds on seedlings and tender young shoots of various grasses. It seldom flies, preferring to scramble among the crop plants. Although Kentucky bluegrass seems to be its favored host plant, it will also feed on timothy-grass, redtop grass, maize, wheat and other small grain crops. Its feeding leaves a characteristic row of identical small holes across an unfolding leaf-blade.
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The leaf blade is long and wide with a narrowly flattened or channelled petiole long. It blooms between December and May, producing white to pink flowers. The flower buds are arranged on the ends of branchlets on a branched peduncle that is circular or angled in cross-section. Each branch of the peduncle has buds in groups of three or seven on pedicels long.
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Adults floating, up to 50 cm long petiolate. Floating leaf blade linear to ovoid, rarely cordate, up to 16 cm long and 5 cm wide, usually considerably smaller. Emersed leaves shaped like the floating leaves, slightly leathery and shorter petiolate. Peduncle up to 45 cm long, angled, dark red to green coloration, slightly pubescent underwater, almost glabrous above water, not swollen under the inflorescence.
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Leaves are sessile and chartaceous in texture. The shape of the lamina (leaf blade) is variable: it may be linear, lanceolate, or slightly elliptic. In the case of rosettes and short stems, the lamina is typically oblanceolate to oblong-elliptic and measures up to 7.5 cm in length by 2.5 cm in width. It has an acute apex and does not exhibit a peltate tendril attachment.
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Eragrostis pectinacea is an annual tuft-forming bunchgrass, reaching maximum heights of anywhere from 10 to 80 centimeters. It is mostly hairless except for a fringe of hairs near where the leaf blade meets the sheath. The inflorescence is open with spreading branches holding yellowish to purplish spikelets, each just under centimeter long. Each narrow spikelet has up to 15 or 20 tiny florets.
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The tiny seeds are explosively expelled. Plants acaulescent or nearly so. The stems, if any, are very short and covered with persistent petiole bases. Leaves are often very numerous and crowded. Stipules persistent; petiole 8–25 cm. Leaf blade long-petiolate, oblong-ovate, deltate- ovate, or orbiculate, entire or deeply pinnately or almost palmately lobed, 6-20 × 7–22 cm, sparsely scabrous or pubescent.
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Flowers are small, white, and in dense clusters. Petiole of the akiraho plant which exists as a stalk that attaches the leaf blade to the stem which grows up to 5 millimeters long. It also has a white thin appressed white to buff tomentum below. Olearia paniculata also has a sweet smell to it and is looked at by many people as used for creating hedges.
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The stems are ringed with pairs of tiny, minutely toothed round leaves, each gray-green leaf blade only a few millimeters wide. The inflorescence is a cyathium only two millimeters wide. The cyathium is made up of flat, white appendages surrounding a single minute female flower within a cluster of several male flowers. The female flower develops into a spherical fruit containing white seed.
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The blade is cut into pinnae throughout its length, from 15 to 45 pairs per leaf. The pinnae are distinctly alternate along the rachis. They are rectangular or quadrangular in shape, those in the middle of the leaf blade measuring from in length and from in width. Each pinna has an obvious auricle at its base, pointing towards the tip of the blade and overlapping the rachis.
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Aganosma cymosa is a liana that can grow up to in length, pale brownish tomentose. Leaf-stalks are , leaf blade broadly ovate or orbicular, by , base rounded or obtuse, apex acuminate or obtuse, rarely retuse, lateral veins eight to ten pairs. Flowers are borne in many-flowered clusters at branch ends, which are carried on stalks up to . Bracts and bracteoles are very narrowly elliptic, about long.
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Eucalyptus apothalassica typically grows to a height of around and forms a lignotuber. The rough, fibrous, grey or grey-brown bark sometimes feels prickly to touch The bark is attached to the trunk in flat strips rather than typical stringybark. The dull or glossy, green, concolorous adult leaves are alternately arranged. The leaf blade has a lanceolate to falcate shape and is in length and wide.
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Anisoptera marginata is a species of plant in the family Dipterocarpaceae. The species name marginata is derived from Latin (maginatus = bordered) and refers to the distinct intermarginal vein of the leaf blade. A. marginata is a canopy tree, up to 45 m tall, found in mixed peat swamp forests and in poorly drained kerangas forests. In Sabah it is also found on soils derived from ultrabasic rock.
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The fruit is a red hip 1–2 cm diameter. The strong, stalk-round branches have an almost bare, purplish-brown bark and there may be many to no curved, stocky, flat spines. The alternately arranged leaves are divided into petiole and leaf blade and a total of 5 to 11 inches long. The petiole and the rhachis are sparsely spiked and glandular-fluffy hairy.
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The lamina (leaf blade) of young rosette plants is linear, while that of rosettes on mature plants may be greatly reduced to the point of being almost absent. On climbing stems, the lamina is narrowly oblong-ligulate to narrowly oblanceolate. It measures up to 12 cm in length by 3 cm in width. It has an acute apex with a slightly peltate tendril insertion.
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Haumania liebrechtsiana is a perennial, rhizomatous, climbing plant that can grow to or more. The stems are hairy and branching, and the leaves are alternate. The long petiole sheaths the stem for most of its length and has a short calloused section just beneath the leaf blade. On the upper side of the blade there is a beak where this calloused region becomes the midvein.
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Nepenthes lamii reaches a maximum height of around 4 m, although plants growing towards the upper altitudinal limit of this species are greatly stunted shrublets. The stem, which may be branched, is rounded or angular in cross section and has internodes up to 8 cm long. Leaves are thinly coriaceous and sessile. The lamina (leaf blade) is most commonly linear, but may also be lanceolate.
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This species is a tree up to 25 meters tall and 80 cm in diameter. The bark is grey with darker grain. The leaves are alternately arranged with a light green petiole tinged with burgundy. The leaf blade is elliptical and leathery in texture, light bright green colored on the top, pale green on the underside, with a prominent median nerve on the bottom.
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A closeup of the stem and leaves of the lectotype Leaves vary in shape from linear-lanceolate to narrowly obovate. The lamina or leaf blade measures up to 26 cm in length by 3 cm in width. Its apex is acute to acuminate. The base of the lamina is amplexicaul and decurrent into two wings that extend up to 2.5 cm down the stem.
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Caesia micrantha has fibrous roots. The leaves are 15 to 65 cm long, with the leaf blade being 3 to 10 mm wide, and the sheath sometimes persisting as fibres. The inflorescence is 25-60 cm with few to many branches and lower bracts which are up to 35 cm long. The flower clusters contain from 1 to 4 flowers and are often paired.
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They bear 16 to 22 pairs of shallowly-lobed, oblong pinnae. The pinnae are borne on jointed stalks about long. Both upper and lower surfaces of the leaf blade are densely covered with straight white hairs, obscuring the tissue of the leaf. On fertile fronds, the sori are protected by false indusia formed by the edge of the leaf curling back over the underside.
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Some varieties have purple discoloration on the branches, as can be observed in other Capsicum species. The leaves have a 5–12 mm long petiole and a leaf blade ovate to 5–12 cm long, 2.5 to 4 cm wide, tapering at the top and the base is wedge-shaped. In addition to the relatively long life, Capsicum pubescens differs in many other characteristics from related species.
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Eremophila fraseri is an erect shrub or small tree, usually growing to a height of between . The branches, leaves, sepals and flower stalks are glabrous and thickly covered with resin making them very sticky and shiny. The leaves vary in size and shape, depending on subspecies, from lance-shaped to egg-shaped. They have a stalk mostly long and a leaf blade mostly long and wide.
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The leaves are petiolate with 2 to 18 cm long petioles. The leaf blade is egg-shaped or round, 5 to 15 cm long and 3.5 to 14 cm wide. The underside is densely hairy with short, soft trichomes, the top is more or less sparsely hairy. The base is heart-shaped, the leaf margin is entire or three-lobed, the tip is pointed or sharply pointed.
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The stems and leaves have a purplish color and are glabrous. The glabrous leaf-blade is around long, wide and has hairs at the base. The distinct midrib leaves of gamagrass can grow up to a height of and a width of . Flowers: The flowers of eastern gamagrass, which blooms from late March to early October, consist of spikes made up of female and male spikelets.
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A slender, glossy leaved climber or hemi-epiphyte. Leaves 1.5 to 5 cm long, 5 to 15 mm wide. Leaves flattened, appearing constricted with an apparent wasp waist in the middle of the apparent leaf at the point where the flattened petiole meets the leaf blade itself. Flowers form in late spring to early summer, being greenish or purple, featuring a lanceolate shaped spathe, 25 mm long.
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The lamina (leaf blade) is linear, oblong, or narrowly obovate, and measures up to 9 cm in length by 2.5 cm in width. Its apex is usually acute, but may also be obtuse. The base of the lamina is attenuate and clasps the stem for around half to three-quarters of its circumference. Three prominent longitudinal veins are present on either side of the midrib.
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Calectasia keigheryi is an undershrub without stilt roots but with a short rhizome from which clones are produced. It grows to a height of about 40 cm with a few short side branches. Each leaf blade is glabrous, 6.8-12.3 x 0.5-0.8 mm tapering to a short, sharp point on the end. The base of the petals (strictly tepals) form a tube 9.3-9.8 mm long.
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Successive leaves on more mature plants become more complex, or pinnate, with deep lobes; these leaves are up to long with 2–11 leaflets. Some adult leaves are simple—with a single lanceolate leaf blade—and up to long; these are generally located near the flower heads. Among the green foliage there are occasional yellow leaves. New branchlets and leaves are covered in brown hair.
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Nepenthes macrophylla is a climbing plant. The stem reaches a length of more than 10 m and is up to 10 mm in diameter. Internodes are up to 35 cm long and circular in cross section. An intermediate pitcher Leaves are coriaceous and petiolate. The lamina or leaf blade is oblong in shape and reaches exceptionally large dimensions of up to 60 cm by 20 cm.
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Large tree Illustration of Citrus torusa (C. hystrix) by Francisco Manuel Blanco C. hystrix is a thorny bush, tall, with aromatic and distinctively shaped "double" leaves. These hourglass-shaped leaves comprise the leaf blade plus a flattened, leaf-like stalk (or petiole). The fruit is rough and green, and ripens to yellow; it is distinguished by its bumpy exterior and its small size, approximately wide.
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The leaf blade is narrow lance-shaped, usually long and wide with the base tapering to the petiole, and a pointed apex. The flowers are arranged in groups of seven in the leaf axils on stout, unbranched peduncles. The groups are broadest near the tip and approximately long. The fruit are hemispherical to cone-shaped with the narrower end towards the base and wide.
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Scaevola phlebopetala is a generally prostrate herb, with stems growing to 50 cm. The stems are bristly, with hairs at 90° and sometimes rough to the touch. The leaves are stalkless and usually toothed with the leaf blade being from 1/2 to 10 cm long by 3 to 17 mm wide. The flowers occur in racemes which are up to 30 cm long.
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The leaves are set alternately and lack both stipules and leaf stalk. The leaf blade is line-shaped, up to 12 cm (6 in) long and ½ cm (0.2 in) wide, tapering towards the tip. It has an entire margin, that carries many with long tentacles topped by teardrop-shaped glands. The upper surface of the leaves is covered with much smaller, shorter tentacles intermingled with white hairs.
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Leaves are petiolate to subpetiolate and coriaceous in texture. In mature plants, the lamina (leaf blade) is narrowly oblong and measures 15–50 cm in length by 6–10 cm in width. The laminar apex is typically acute or rounded, but may occasionally be abruptly truncated. The base may be shortly attenuate or obtuse, and encircles the stem for two-thirds to the entirety of its circumference.
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Aceria anthocoptes is considered to be a good potential biological control agent for Cirsium arvense, the Canada thistle. It damages both the epidermal cells and deeper mesophyll layers, on both the upper and lower surfaces of this invasive weed. The result is visible deformation and folding of the leaf blade, with a curling of the leaf edges. The leaves become russeted and bronzed, and gradually dry out.
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The conical pseudobulbs are high and heteroblastic (derived from a single internode). The oblong to narrowly lanceolate leaves are long by wide, taper to a point, and have three to five primary longitudinal veins. There is a single papery leaf on each pseudobulb with a long petiole with a joint about below the leaf blade. Inflorescences are long, of which of that length is the peduncle.
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Sedum alfredii is a perennial herb in areas of Asia, The herb has top or tip branched stems that ascend from between 10 and 20 cm in length. Leaves of Sedum alfredii are deciduous and alternate proximally on the stem. Leaf blades are wedge-shaped with straight lines. Leaf blade shape may also be characterized as being oval (obovate) or broad with a tapered base.
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The leaves are evenly distributed along the stem. The firm, blue-green leaf blades are up to 10 centimeters long by 1 centimeter wide, and are lance-shaped, widest distal to the bases. The leaf blade margins are cartilaginous, becoming white in color when dry. The plant has open flowers on the stem inflorescence and cleistogamous, unopening flowers which grow underground on white, self- pollinating spikelets.
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Inflorescence showing central carpellate flower and lateral staminate flowers Haptanthus hazlettii is a shrub or tree. It has opposite leaves spaced at 5.5–6.0 cm apart, usually arranged in two ranks (distichous). The leaves are simple with untoothed (entire) margins. There are no stipules. The leaf stalk (petiole) is short, 7–8 mm long, the leaf blade (lamina) 10–13.5 cm long by 4.1–5.6 cm wide.
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The Monodora myristica tree can reach a height of 35 m and 2 m in diameter at breast height (DBH). It has a clear trunk and branches horizontally. The leaves are alternately arranged and drooping with the leaf blade being elliptical, oblong or broadest towards the apex and tapering to the stalk. They are petiolate and can reach a size of up to 45 x 20 cm.
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It grows to heights of from 10 to 60 cm and its stems may be prostrate, decumbent, or ascending. The base is often reddish. The leaves are stalked and without any surface covering, with the leaf blade being 1-10 by 0.5-6 cm. There are 1 to 8 flowers with stamens per sheathed bundle and these flowers have narrow oblong tepals which are 1.5-2 mm.
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Each leaf has a small ligule, extending to about 1 mm. The blade of the leaf (the part free from the pseudostem) is usually 5–15 cm long (occasionally up to 40 long) by 1.5–3 cm wide. The leaf sheath is smooth (glabrous) or hairy (pubescent), with hairs which are more-or-less bent over (appressed). The lower part of the leaf blade is similar; the upper part is scaly.
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The lamina or leaf blade is obovate-oblong in shape and measures up to 15 cm in length by 6 cm in width. Its apex is acute to obtuse and may even be slightly peltate. The base of the lamina is gradually attenuate towards the petiole. The petiole (≤4 cm long) is grooved lengthwise and bears a pair of narrow wings that form a semi-amplexicaul sheath around the stem.
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Viburnum ellipticum, the common viburnum or oval-leaved viburnum, is a species of shrub in family Adoxaceae. It is native to the western United States from Washington to central California, where it occurs in forests and mountain chaparral habitat. The shrub has deciduous leaves with oval or rounded blades 2 to 6 centimeters long. The leaf blade usually has three main longitudinal veins and a shallowly toothed edge.
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While the only specimen known lacks a rhizome, it is believed, from examination of the leaf base, to bear linear to lance-shaped, orange-tan scales. The fronds are long. The stipe (the stalk of the leaf, below the leaf blade) takes up from 40% to 50% of the length of the frond. It is purplish-black in color and round, bearing abundant orange-tan hairs tipped with glands.
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This perennial herb is between 20 and 50 cm tall and has variegated leaves. Its branched stems have a circular section towards the base and quadrangular towards the summit. They present some hairs at the nodes and the apex, as well as at the level of the short petioles (1 to 4 mm long). The leaf blade is 1 to 6 mm long and 0.5 to 2 mm wide.
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Aloe viridiflora grows in individually, in dense stemless rosettes of 50 to 60 lanceolate narrowed leaves. The glaucous, clearly lined leaf blade grows up to 100 mm long and 20 mm wide. The pungent, pink reddish brown teeth on the leaf margin are 2 mm long and are 2 to 5 mm apart. The inflorescence has up to six branches and reaches a length of about 150 cm.
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In both of these, the pinnae have short stalks, rather than being sessile; the pinnae are fewer, typically from 5 to 12 rather than 25 or more; and the dark color of the stipe and rachis extends only halfway up the frond. It is easily distinguished from A. tutwilerae, which has fewer pinnae which are more pointed and dramatically irregular, and a longer stipe and shorter leaf blade.
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Leaves are sessile and coriaceous in texture. The lamina (leaf blade) is linear and measures up to 10 cm in length by 2 cm in width. Its apex may be acute or obtuse and it is abruptly contracted at the base, clasping the stem for around half of its circumference. One to two longitudinal veins are present on either side of the midrib, while pinnate veins are irregularly reticulate.
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Robust rosette plants with dark purple lower pitchers and leaves showing a sub-peltate tendril insertion Leaves are coriaceous in texture and range from sessile to sub-petiolate. The shape of the lamina, or leaf blade, varies from oblong to spathulate. It measures up to 20 cm in length by 4 cm in width. The apical end of the lamina is typically rounded, but may be narrowed and obtuse.
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Tubers of S. affinis S. affinis is a perennial herbaceous plant with red to purple flowers and reaches a height of 30 – 120 cm. The green leaves are opposite arranged on the stem. The rough, nettle-like leaves can be ovate-cordate shaped with a width of 2.5 – 9.5 cm or ovate-oblong with a width of 1.5 – 3.5 cm. The leaves are separated into a leaf blade and a petiole.
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They create a leafy case, consisting of large pieces of leaves arranged alternately on one or the other side giving the impression of a woven case. The pieces used to increase the size of the case are cut from the middle part of the leaf blade. The valve is two-sided. The case has a length of 6.5–8 mm and is chocolate-brown or grayish in color.
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Megaphrynium macrostachyum is a rhizomatous perennial plant up to tall. Each stem bears a single leaf and an inflorescence, the remaining leaves arising directly from the rhizome which can be long. These leaves are borne on petioles up to long which sheath the stem at its base and have calloused portions just below the blade. Each leaf blade is ovate/elliptical, up to , with a rounded base and acute apex.
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The scales are narrowly triangular, and range in color from black to a dark reddish brown. They are long, 0.3 to 0.6 millimetres wide, and entire (untoothed) at the edges. The stipes (the stalks of the leaf, below the blade) are reddish brown at the base, fading to green above. They range from in length, and are about 2 to 5 times the length of the leaf blade itself.
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Scaevola nitida is a spreading shrub growing up to 3 m tall, glabrous, and is sticky when young. The leaves have no stalk and are obovate to narrowly elliptic, and toothed, with the leaf blade itself being from 2 to 8.7 cm long by 7–40 mm wide. The flowers occur in terminal spikes which are up to 6.5 cm long. The sepals are rim-like and 0.3 mm high.
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Alchornea latifolia is a small evergreen tree, sometimes with a buttressed trunk, growing to a height of about . The leaves have thick stalks and are ovate to elliptic, with a rounded base and a short pointed apex. They have three veins radiating from the base and are long and wide. The leaf margins have a small number of short, blunt teeth and the lower side of the leaf blade is downy.
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A hairless, slim climber with bulbous roots and lignescented base, its leaves are stalked with 2 to 6 cm long petioles. The leaf blade is ovate to circular in outline, 3 to 10 cm long and 6 to 9 cm wide. It is divided into five to seven segments, these are lanceolate, ovate or elliptic, entire and pointed at the tip and base. Often pseudo side-leaves are formed.
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The length of the stipe is typically from 20% to 100% of the leaf blade length. The leaf blades are spreading to erect, with the fertile fronds slightly taller and more erect than the sterile fronds. The overall shape of the blades is narrowly triangular to lanceolate, truncate (squared off) at the base, ranging from long and wide. The shape and cutting of the blades is highly variable.
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The conical pseudobulbs are high and heteroblastic (derived from a single internode). The ovate to wedge shaped leaves are long by wide with smooth margins that can become wavy. There is a single leathery leaf on each pseudobulb with a long petiole with a joint near the base of the leaf blade. Inflorescences are up to long with two to three sheathing, overlapping bracts at the base of the peduncle.
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Trichophorum cespitosum is a densely tufted perennial sedge often growing gregariously. The wiry stems are round in cross section and slightly ridged, and grow up to long. The leaves are reduced to several pointed sheaths at the base of the stem. The blade of the uppermost sheath is longer than that of the few-flowered spike-rush (Eleocharis quinqueflora), an otherwise similar plant, which has a small squarish upper leaf blade.
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The leaves above water are arrowhead-shaped, the leaf blade 15–25 cm long and 10–22 cm broad, on a long petiole holding the leaf up to 45 cm above water level. The plant also has narrow linear submerged leaves, up to 80 cm long and 2 cm broad. The flowers are 2-2.5 cm broad, with three small sepals and three white petals, and numerous purple stamens.
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Daphniphyllum majus grow from 2m to 10m tall. Its grayish-brown branchlets are stout and densely covered in lenticels. The leaf blade is green when dry, glaucous below, oblong-elliptic or obovate-oblong in shape, (16-)20-37 × 7-14 cm, apex acuminate, reticulate veins are prominent on both surfaces. Along with some others species of the genus, D. majus has loosely arranged conical to round palisade cells in its leaves.
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The leaf blades are ovate to broadly ovate or ovate-elliptic. They typically range in size from long and wide. At their tips, leaf blades are acute to acuminate (tapering to a sharp point), while at their base, they are either cordate to abruptly contracted and obtuse or long, slender and wedge shaped. The surface of the leaf blade is puckered with a blistery appearance or is wrinkly and rugged.
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Nepenthes burbidgeae is a strong climber that quickly enters the vining stage. The stem reaches 15 m in length and is up to 18 mm in diameter. Internodes are cylindrical to triangular in cross section and up to 12 cm long. A rosette plant with lower pitchers The leaves of this species are coriaceous and petiolate. The lamina or leaf blade is oblong in shape and up to 40 cm long by 10 cm wide.
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Leaves are generally seated, and their foot may be widened, particularly when these are succulent. Leaves in other species assigned to Lignofelicia may be digit-shaped, not having a recognisable margin. Species with stalked leaves are rare and restricted to the sections Felicia and Neodetris. Each leaf has between one and five primary veins, a number that is directly linked with the width of the leaf blade, and varies on the same plant.
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Banksia neoanglica is sometimes a multi-stemmed shrub with an underground lignotuber and growing to a height of , otherwise a tree to . The adult leaves have a petiole about long and a linear leaf blade long and wide. Immature leaves are wider but shorter and have teeth along their edges. The upper surface of the leaves is glabrous but the lower side is covered with a layer of greyish-white felted hairs.
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Sagittaria papillosa, the nipplebract arrowhead, is a plant species native to the south-central United States (Texas, Oklahoma, Louisiana, Arkansas and Mississippi).Biota of North America Program, Sagittaria papillosa Sagittaria papillosa grows in wet places such as marshes and the banks of lakes and slow- moving streams. It is a perennial herb up to 120 cm tall. Petioles are triangular in cross-section, the leaf blade very narrowly elliptical to ovate, not lobed.
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Later, infected wheat plants bearing teliospores were soaked in water and suspended over barberry species. Infection was produced, thus solving a "century-old mystery" of plant pathology. The disease usually occurs early in the growth season, when temperature ranges between ; but it may occur to a maximum of . High humidity and rainfall are favorable conditions for increasing the infection on both leaf blade and leaf sheath, even on spikes when in epidemic form.
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Cheiranthera linearis is a small upright shrub to with smooth stems. The leaves are sessile, arranged alternately, more or less clustered on the stem, leaf blade mostly linear, long, wide, edges curved under, smooth, toothed or with lobes about long. The flowers may be single or in clusters of 2-5 on a short upright stems and 5 yellow stamens. The flower petals are egg-shaped, long and a blue to deep purple.
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The tree typically grows to a height of with a crown of up to about wide. E. megacornuta has the habit of a small tree or shrub with a smooth brown to grey-red and green trunk and smooth bark over the length of the trunk and branches. The dull, green, thick and concolorous adult leaves have a disjunct arrangement. The leaf blade has lanceolate to elliptic shape that is basally tapered.
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The leaf blade of ebony spleenwort is linear in shape, sometimes slightly wider in the upper half of the blade, measuring from long and from wide, sometimes as wide as . It comes to a point at its tip and gradually tapers at its base. The blade is shiny and has a few scattered hairs, or lacks them entirely. The rachis (leaf axis), like the stipe, is reddish-brown or purplish-brown, shiny and hairless.
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Dasylirion wheeleri is a moderate to slow-growing evergreen shrub with a single unbranched trunk up to thick growing to tall, though often recumbent on the ground. The leaf blade is slender, 35–100 cm long, gray-green, with a toothed margin. The leaves radiate from the center of the plant's apex in all directions (spherical). The flowering stem grows above the foliage, to a height of tall, and 3 cm in diameter.
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The leaf blade has a lanceolate shape with a length of and a width of and the base tapers to the petiole. The tree usually blooms between February or March and September or November producing orange flowers. The single axillary inflorescences form groups of over seven buds per umbel. The bright green mature buds have a clavate to pyriform shape with a length of and a width of with bright orange flowers.
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Syzygium kuranda, commonly known as cherry penda, cherry satinash or kuranda satinash, is a tree of the family myrtaceae native to north eastern Queensland. The tree can grow to in height with a trunk that can be in diameter. It has simple shiny dark green leaves that are paler on the underside. The leaf blade is lance-like to elliptical in shape narrow at the base and with a blunt point at the tip.
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Key factors in diagnosing downy mildew on maize and sorghum caused by Peronosclerospora sorghi include chlorosis of the leaves, followed by white streaking of the leaves. The leaves could also have a white, downy growth on the underside of the leaf blade. The white streaked areas of leaves become necrotic over time, leading to a shredded leaf appearance. In the maturing plant, the reproductive structures do not form properly or do not form at all.
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Allium sativum is a perennial flowering plant growing from a bulb, it has a tall, erect flowering stem that grows up to . The leaf blade is flat, linear, solid, and approximately wide, with an acute apex. The plant may produce pink to purple flowers from July to September in the Northern Hemisphere. The bulb is odoriferous and contains outer layers of thin sheathing leaves surrounding an inner sheath that encloses the clove.
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The following is a defined list of terms which are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (a single leaf blade or lamina) or compound (with several leaflets). The edge of the leaf may be regular or irregular, may be smooth or bearing hair, bristles or spines. For more terms describing other aspects of leaves besides their overall morphology see the leaf article.
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Croton hancei Croton hancei is a monoecious shrub or treelet, ca. 5 m tall; the branches glabrous, the oblong-lanceolate leaves are clustered at the stem apex on petioles 2–5 mm long, the leaf blade 8–18 × 2–5 cm, papery in texture, with both surfaces glabrous; the base is attenuate to obtuse, the margins entire or serrulate, and the apex acuminate. The Inflorescences are terminal, ca. 3 cm, the bracts small.
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It flowers from October–February, and fruits from December–May. It is distinguished from the related A. falcis by its erect growth form, long, thin, ribbed and glaucous leaf blades, and the dense hairs at the leaf blade–ligule junction. It is threatened by introduced species such as the common brushtail possum, and plants such as Lycium ferocissimum and Pinus contorta. Its isolated populations are also threatened by fire, floods and erosion.
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The fertile and sterile leaves may look alike or slightly different. The leaf blade is triangular and composed of many leaflets which are subdivided into untoothed segments. The segments are lined with sori over which the edges of the leaf are folded to form a false indusium. Aspidotis densa develops on crevices and exposed rocky outcrops in mossy cracks, and over time creeps to fill in every fissure, creating well-established colonies in the outcrop.
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The stems are erect, tough, and unbranched until just below the inflorescence. The junctions of the stems are covered by two fused stipules which form an ochrea, a thin, paper-like sheath - a characteristic of the family Polygonaceae, and fringed above in this species. The stem leaves are alternate and are narrowly ovate–lanceolate and have a rounded or tapered base. The leaf stalks are approximately the same length as the leaf blade.
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The leaves can be described as having pinnate venation with obtuse or rounded leaf blade bases, rounded leaf apices, sub-entire blade margins, and glabrous surface. A leaf's abaxial surface is dull, pale and its adaxial surface is shiny, dark green with a leathery feeling upon touch. There is also sometimes white tissue that borders larger veins adaxially. The plant is evergreen and its leaves are persistent throughout all seasons unlike deciduous plants.
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Eucalyptus cerasiformis is a mallee that typically grows to a height of and has smooth, pale grey and white, sometimes powdery bark. The adult leaves are thin and the same glossy, grey-green on both sides. The leaf blade is narrow lance-shaped, long and wide on a petiole long. The flower buds are borne in groups of seven in leaf axils on a thin peduncle long, the individual buds on a pedicel long.
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The mallee typically grows to a height of and has smooth grey- brown to green coloured bark and forms a lignotuber. The concolorous, glossy, green adult leaves are erect and alternately arranged. The leaf blade is usually a lanceolate shape with a length of and a width of with a pointed apex and a base that tapers to the petiole. It blooms between October and March producing white to cream coloured flowers.
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The leaf blade is linear to narrow lance-shaped or curved, long and wide with a petiole long. The flower buds are arranged in groups of between seven and fifteen in leaf axils, the groups on a peduncle long, individual buds on a pedicel long. The buds are "egg-in-egg cup shaped" or spindle- shaped, long and wide. The operculum is long and equal in width or narrower than the floral cup.
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Pin flower of primrose Primula vulgaris is a perennial growing tall, with a basal rosette of leaves which are more-or- less evergreen in favoured habitats. It flowers in early spring in the northern hemisphere (February–April) on slopes and meadows. The leaves are 5–25 cm long and 2–6 cm broad, often heavily wrinkled, with an irregularly crenate to dentate margin. The leaf blade is gradually attenuated towards the base and unevenly toothed.
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Eucalyptus ovularis is a tree or mallee that typically grows to a height of and forms a lignotuber. It has dark grey, rough and flaky bark at the base that becomes white-pinkish-grey and smooth above. The glossy, green adult leaves are alternately arranged. The leaf blade has a linear to narrowly lanceolate shape with a length of and a width of with a base tapering to the petiole and a fine pointed apex.
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Myoporum viscosum is a shrub which sometimes grows to in height with young branches that are flattened and sticky. The leaves are arranged alternately and mostly long, wide, thick and stiff. The base of the leaf partly wraps around the stem and the leaf blade is folded or curved with serrated edges and has many oil dots. The flowers appear in the leaf axils in clusters of 5 to 8 on a stalk long.
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Kunzea affinis is a shrub which grows to a height of up to and a width of about . It usually has a few erect branched which have many intricate, short side branches and which are hairy when young. The leaf stalk is less than long and the leaf blade is linear, long and less than wide. The leaves are erect or pressed against the stem and have long hairs, mainly along their margins.
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The moth flies in sunshine from mid-May to early August. The larvae feed on various species of Rumex, such as Rumex acetosa and Rumex acetosella. The eggs are laid on the leaf blade; the larva mines the leaf when it is small, but later moves to the lower parts of the plant and feeds on the leaves. When fully developed it descends to the ground and pupates in a cocoon among the vegetation.
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It grows as a prostrate or straggly shrub usually growing to a height of about and a spread of up to . The leaves are clustered at the base of the stem, have a stalk and a leaf blade that is thread-like to egg-shaped and . The leaves have prominent veins and end abruptly in a sharp point. The flowers are arranged in dense clusters of up to 18 tube-like blue flowers, each about long.
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The rosy maple moths preferentially lay their eggs on maple trees, and sometimes nearby oak trees. Since the larvae remain on the same tree upon which they hatched, most larvae feed on the underside of maple leaves or oak leaves. In early instars, the larvae feed together in groups, but beginning in the third or fourth instar the caterpillars begin to feed individually. The larvae eat the entire leaf blade and are capable of consuming a few leaves each.
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Unlike the elms, the branchlets are never corky or winged. The leaves are alternate, with serrated margins, and (unlike the related elms) a symmetrical base to the leaf blade. The leaves are in two distinct rows; they have pinnate venation and each vein extends to the leaf margin, where it terminates in a tooth. There are two stipules at each node, though these are caducous (shed early), leaving a pair of scars at the leaf base.
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The botanical term "sagittate" simply means arrow shaped. So the leaf blade is both arrow shaped and slightly oval. Adult leaf blades can range in size from as small as 67cm (2.2 feet) but are more commonly 109 to 165cm (3.6 to 5.4 feet) in length according to published statistics. The blades can range from 30 to 82cm (1 to 2.7 feet) in width but unusually large specimens have been measured at 100 cm (almost 3.3 feet) wide.
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The leaves themselves are long, with 8–22 deep lobes on each leaf edge. Narrowly triangular to roughly linear in shape and long, these lobes are either oppositely or alternately arranged along the leaf midline, and arise at 60–80 degrees. The leaf blade narrows for the top third of its length to a pointed apex. Flowering occurs from mid September to late November, with the flower spikes, known as inflorescences, arising at the ends of the stems.
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This plant grows a rosette of leaves up to about 10 centimeters wide, each leaf blade- shaped to cone-shaped and up to 10 centimeters long and one wide. The leaves are fleshy and hairless, generally pale green, often tinted with pink or yellow. From the rosette bolts an erect stem, which is a caudex topped with a multi-branched inflorescence. The stem and branches may be dark to very light and almost white in color.
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M. bidwillii is an erect to spreading plant, the branches and leaves of which are smooth (or having a few scattered hairs on the inflorescence axes). The leaves are linear to oblanceolate and rounded at the tip. The leaf blade is from 1.5 to 3 cm long and 1.5 to 3 mm wide, with obscure venation and an obscure petiole. The inflorescence a 2-flowered simple umbel on a peduncle which is from 3 to 6 mm long.
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Leaves are in a basal dense rosette (wintering under the snow), dark green, which redden by autumn, with an almost rounded blade and a membranous sheath remaining up to two to three years. The leaf blade is broadly elliptical or almost rounded, rounded or chordate at the base, obtuse or indistinctly dentate, 3–35 cm long, 2.5–30 cm wide, on wide petioles not exceeding the length of the plate, equipped at the base with membranous vaginal stipules .
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Leaves are sessile and coriaceous in texture. The lamina (leaf blade) is linear to lanceolate, measures up to 35 cm in length by 4 cm in width, and is around 0.5 mm thick. Its apex is acute to narrowly acuminate and it is attenuate at the base, clasping the stem for around three-quarters of its circumference. Three longitudinal veins are present on either side of the midrib, restricted to the distal quarter of the lamina.
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Leaves are sessile and coriaceous in texture. The lamina (leaf blade) is lanceolate, measures up to 35 cm in length by 5 cm in width, and is around 0.2 mm thick. Its apex is acute and it is attenuate at the base, clasping the stem for around three-quarters of its circumference and being decurrent for up to 4 cm. Three longitudinal veins are present on either side of the midrib, restricted to the distal quarter of the lamina.
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Leaves are sessile and coriaceous in texture. The lamina (leaf blade) is linear to lanceolate, measures up to 30 cm in length by 3.5 cm in width, and is around 0.5 mm thick. Its apex is acute to narrowly acuminate and it is attenuate at the base, clasping the stem for around three-quarters of its circumference. Three longitudinal veins are present on either side of the midrib, restricted to the distal quarter of the lamina.
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The lamina (leaf blade) is linear to slightly lanceolate or narrowly elliptic and measures up to 18 cm in length by 3 cm in width. Its apex is acute or obtuse, whereas the base is slightly attenuate and clasps the stem for half to three-quarters of its circumference. It is also slightly auriculate and has an oblique attachment to the stem. The laminar base may be decurrent down the stem to varying degrees or not decurrent at all.
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The crown has an open spreading habit with a typical spread of . The strongly discolorous, glossy adult leaves are arranged alternately supported on a petiole that is in length. The leaf blade is darker green on upper side and paler below with slightly falcate to lanceolate shape and a length of and a width of with a base usually tapering to the petiole. The side-veins in the leaf are at an acute or wider angle and densely reticulate.
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Macfarlane's description includes a line drawing of N. beccariana, showing a leaf blade, a lower pitcher, and an upper pitcher. It has been suggested that the upper pitcher in this illustration actually represents a composite, with features of both lower and upper pitchers. Twenty years later, B. H. Danser synonymised the taxon with N. mirabilis in his seminal monograph, "The Nepenthaceae of the Netherlands Indies". With regards to the taxonomic status of N. beccariana, Danser wrote:Danser, B.H. 1928.
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Dracaena angolensis has striped, elongate, smooth, greenish-gray subcylindrical leaves. They are up to diameter and grow up to above soil. The spear sansevieria grows fan-shaped, with its stiff leaves growing from a basal rosette. The species is interesting in having subcylindrical instead of strap-shaped leaves caused by a failure to express genes which would cause the cylindrical bud to differentiate dorsoventrally or produce a distinctive and familiar top and bottom surface to the leaf blade.
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The egg mass passes along this fold and the pedal gland is used to cement the egg capsule to the leaf blade. This process takes about ten minutes, during which time the snail's body and shell oscillate from side to side. After this, the snail moves forward slightly and repeats the process, eventually producing a series of flattened capsules that overlap each other giving a shingled effect. A typical egg string may contain 45 eggs and be long.
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Leuenbergeria bleo grows as a shrub or small tree and reaches a height of 2 to 8 metres with trunks up to 15 centimetres in diameter. The olive-green to brownish grey branches are smooth. The leaves are arranged alternately on the branches and are distinctly stalked with petioles up to 3 centimetres long. The leaf blade is 6 to 20 centimetres long and 2 to 7 centimetres wide, elliptic to oblong or lanceolate in shape.
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These pinnae are arranged on a single plane on each side of the rachis, such that the pairs form a V-shape down the leaf blade. The pinnae are sized in length and in width in the middle of the leaf. The developing inflorescence is protected within a hairless, woody spathe in length, with the enlarged part of the spathe being long and in width. The inflorescence is branched with 7-35 rachillae (branches) which are in length.
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Cotylelobium lanceolatum is a species of plant in the family Dipterocarpaceae. The name is derived from Latin (' = in the form of a lance) and refers to the shape of the leaf blade. C. lanceolatum is a canopy tree, up to 45 m, found in kerangas forests on raised beach terraces and sandstone plateaux and on organic soils over limestone. The species is found in Peninsular Thailand, eastern coastal areas of Peninsular Malaysia, the Anambas Islands and Borneo.
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The lamina or leaf blade is spathulate to oblong in shape and coriaceous (leathery) in texture. The leaves of rosettes are up to 27 cm long by 7.8 cm wide, whereas those of the climbing stem are up to 16 cm long by 6 cm wide. The base of the lamina clasps the stem by one half to three quarters of its circumference. The midrib is concave on the upper surface and triangular on the lower surface.
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Eremophila strongylophylla is a rounded shrub with many branches growing to a height of between with its branches and leaves covered with a layer of fine, yellowish to grey hairs and glandular hairs. The branches are rough due to raised leaf bases. The leaves are arranged alternately, well spaced along the branches and have a flattened stalk that is long. The leaf blade is egg-shaped, spoon- shaped or almost round, mostly long, wide and has a wavy surface.
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According to the 2003 key in the Flora of China, this species is distinguished from other entire-leaved rhubarbs in China with leaves having a wavy or crisped margin; R. wittrockii, R. rhabarbarum, R. australe and R. hotaoense, by having less than 1 cm-sized fruit, yellow-white flowers, and a wider than long leaf blade with a reniform-cordate to cordate shape. In many characters, it is most similar to R. rhabarbarum and R. hotaoense.
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The blades are usually large, from narrowly lanceolate to oval, with the base ranging from heart shaped to very gradually narrowing, and can have a sharply pointed or blunt tip. The leaf margin is always entire, but in some species and forms can be rather wavy. Basal leaves are carried on stalks that can be short or longer than the leaf blade in various species. Stem leaves are smaller and often narrower, and are unstalked or clasping the stem.
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Kunzea acuminata is a shrub which grows to a height of up to , with a few spindly branches covered with long silky hairs when young. The leaf stalk is long and the leaf blade is linear to lance-shaped, long and about wide. The leaves have long, silky hairs along their margins. The flowers are arranged in roughly spherical heads containing eight to fifteen flowers on the ends of the branches which continue to grow after flowering.
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Eremophila serrulata is a shrub that grows to a height and width of . Its leaves are arranged alternately along the branches and are lance-shaped, egg-shaped or almost circular and have a stalk long. The leaf blade is mostly long, wide, usually has many small serrations on the edges and sometimes has a few hairs but these are often obscured by resin. The flowers are borne singly in leaf axils on a slightly hairy, S-shaped stalk, long.
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The leaf blade feels rough to the touch and has hairs that may be soft, weak, thin and clearly separated or coarse, rough, long and densely matted. The edges of the leaf are toothed, and may be crenate (with rounded edges), or serrate (with jagged edges). An individual plant of L. substrigosa typically has four to eight peduncles in each leaf axil. They tend to be long and are covered with long, rough, and coarse hairs.
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Calectasia palustris is an undershrub with stilt roots 40-110 mm long but without a rhizome. It grows to a height of about 70 cm with many short side branches. Each leaf blade is 7-23 x 0.4-0.7 mm tapering to a short, sharp point on the end. The base of the petals (strictly tepals) form a tube 9.9-10.1 mm long, while the outer parts spread outwards to form a blue, papery star-like pattern fading to red with age.
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Stylidium graminifolium 'ST111', also known under the tradename Tiny Trina, is a cultivar of Stylidium graminifolium that was selected for in 2001 by Todd Layt of Ozbreed Pty Ltd and granted cultivar status in 2005. Tiny Trina has a deeper pink flower colour and leaves that are a darker shade of green with varying leaf blade widths. It also begins to flower later in the season than the other S. graminifolium cultivar, Stylidium graminifolium 'ST116', known under the tradename Little Saphire.Paananen, Ian. (2003).
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The leaf blade has a lanceolate to falcate shape and are in length and wide. It flowers between July and October producing axillary unbranched inflorescences but can appear to be arranged in clusters toward the end of the branch. The ovoid to obovoid shaped green to yellow mature buds are in length and wide and have creamy shaped flowers. The fruit that form after flowering have a truncate- globose to hemispherical shape with a length of and a width of .
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It is an evergreen, climbing shrub with thick, thorny stems and drooping branches that are glabrous or sparsely hairy. The leaves have a 0.3 to 1 centimeter long stem. The leaf blade is ovate to ovate- lanceolate, pointed or briefly pointed, 5 to 13 centimeters long and 3 to 6 centimeters wide, sparsely fluffy hairy on the underside and bald on the top. The leaf-like bracts are purple, oblong or elliptical, pointed, 2.5 to 3.5 inches long and about 2 inches wide.
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The outer two-thirds of the leaf blade bears outward-pointing spines which may be an adaptation to prevent herbivores from reaching the center of the plant. The plant is believed to be hazardous to sheep and birds which may become entangled in the spines of the leaves. If the animal dies, the plant may gain nutrients as the animal decomposes nearby, though this has not been confirmed. For this reason, Puya chilensis has earned the nickname "sheep- eating plant".
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Eucalyptus baudiniana is a tree, rarely a mallee, that typically grows to a height of , sometimes , and forms a lignotuber. It has rough, fibrous to flaky, dark grey bark on the trunk of the three which then becomes smooth and grey-brown on the branches. Adult leaves are arranged alternately and the same glossy green on both sides. The leaf blade is narrow lance-shaped to curved, long and wide with the base tapering to the petiole that is long.
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Only around January it enters the leaf blade, and starts making a recognisable leaf mine. In one study, comparing P. ilicis to P. ilicicola on Ilex plants it was demonstrated that there were an average of 0.23 mines per leaf (or one mine for every four or five leaves on a plant). Up to three mines may occur on a leaf – often much less than the number of oviposition scars, suggesting that intra-leaf competition has taken place. P. ilicis is univolitine.
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Stripe rust on wheat Yellow rust, or stripe rust, takes its name from the appearance of yellow-colored stripes produced parallel along the venations of each leaf blade. These yellow stripes are actually characteristic of uredinia that produce yellow-colored urediniospores. Primary hosts of yellow rust of wheat are Triticum aestivum (bread wheat), Triticum turgidum (durum wheat), triticale, and a few Hordeum vulgare (barley) cultivars. Other cereal rust fungi have macrocyclic, heteroecious life cycles, involving five spore stages and two phylogenetically unrelated hosts.
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In some other plant groups, such as the speedwell genus Veronica, petiolate and sessile leaves may occur in different species. In the grasses (Poaceae) the leaves are apetiolate, but the leaf blade may be narrowed at the junction with the leaf sheath to form a pseudopetiole, as in Pseudosasa japonica. In plants with compound leaves, the leaflets are attached to a continuation of the petiole called the rachis. Each leaflet may be attached to the rachis by a short stalk called the petiolule.
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As you can see in the photos, one specimen has a much lighter green leaf blade and is also larger. The areas of concern to experts include the cataphylls of the specimen which when dried are fibrous and similar in texture to a dried coconut husk. The cataphylls of the specimen shown on the top of this page do not dry in such a manner. For those unfamiliar with the botanical term, the cataphyll is the "sheath" which forms around any new leaf.
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Hypnum lindbergii, cross section of the stem with the central vascular bundle leaf blade cells Detail of a sporangium with a beak-shaped operculum Hypnales are mosses with pinnately or irregularly branched, reclining stems, with varying appearances. The stem contains only a reduced central vascular bundle, which is seen as a recent derived trait in mosses. The stems are covered with paraphyllia or pseudoparaphyllia, reduced filamentous or scaly leaves. The ordinary stem leaves are ovate to lanceolate, often with leaf wing cells.
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Felicia cymbalariae is a perennial herbaceous plant of up to 30 cm (12 in) high, with green, creeping branches that bend upwards. The branches are set with stiff hairs standing out, and most leaves are oppositely set, but the highest may be alternate. The leaves are stalked. The leaf blade is broadly egg-shaped to slightly heart-shaped, up to 6 cm (2.4 in) long and 4½ cm (1.8 in) wide, the margin with few strong, coarse teeth, or pointy lobes.
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Könemann Publishing Company, 2003, (therein page 675). The constantly opposite arranged on the stems leaves are divided into petiole and leaf blade. The bald petioles are all almost the same length with a length of 7 to 15 millimeters. The simple, dark green, parchment-like, almost uniformly shaped leaf blades are obovate with a length of 2.5 to 6 centimeters and a width of 1.5 to 3 centimeters with a broad, wedge-shaped or almost rounded blade base and a spiky tip.
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It is a flowering herbaceous perennial plant growing to tall, with broad lanceolate leaves 3–12 cm long and 2–5 cm broad. Leaves are mostly alternate, although they may be opposite near the top of the plant. The changeable, simple leaves are stalked 1.5 to 6 cm long. The leaf blade is ovate to broadly elliptic, sometimes obovate, 2.5 to 13 inches long and 2 to 5.5 inches wide, green and sometimes spotted or pink or reddish on the underside.
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All of these Nepenthes produce very viscous pitcher fluid. However, N. jacquelineae has a more robust growth habit and produces considerably larger pitchers than these species. The shape of the pitcher cup is closest to N. talangensis (minus the peristome), whereas the lid resembles that of N. tenuis, although it is broader throughout and contracted towards the base. N. jacquelineae can also be distinguished from N. tenuis by its ovate-spathulate leaf blade, as opposed to linear-lanceolate in the latter.
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Macaranga grandifolia is a species of flowering plant in the family Euphorbiaceae. Common names for this plant include nasturtium tree, parasol leaf tree and bingabing. It is endemic to the Philippines and has been widely cultivated in Hawaii as a tropical ornamental. This plant has become very popular garden ornamental in many parts of the tropics for the extraordinary grandiose leaves, which are rounded-ovate in shape, with prominent, reddish veins and the stem attached towards the center of the leaf blade.
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All members of this genus have a costa (or midrib) that extends into the leaf blade. This midrib can vary in length; and it is due to this variation that leaf blades of certain species of Sabal are strongly curved or strongly costapalmate (as in Sabal palmetto and Sabal etonia) or weakly curved (almost flattened), weakly costapalmate, (as in Sabal minor). Like many other palms, the fruit of Sabal are drupe, that typically change from green to black when mature.
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The young branches are light brown, the distance between the internodes is about 1 cm. The leaves vary greatly in their shape, they are almost sessile, the petiole is only 1 to 4 mm long, glabrous and dark purple colored. The leaf blade is 4 to 9 cm long and 2.2 to 5.5 cm wide, elliptic to oblong or ovate to reverse ovate. To the front, the leaf is pointed, blunted or rounded, occasionally provided with a small tip or bulged.
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For a Livistona the leaves are quite small: long, by wide. They are stiff and flat to undulate, subcircular, and divided regularly, splitting up the leaf blade into narrow segments or pinnae from its middle to some 58% of its length -these are forked or bifurcated at their end deep, or 16% of their length, and are not drooping, but rigid, and stiffly held up. There are 40 to 50 segments. The leaf blades are dark green on their upper sides.
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It has been shown that the fungus usually requires wounds to infect the plant and necessary for the fungus to develop. The first symptoms of Pestalotiopsis palmarum begin as very small yellow, brown or black discoloration of the leaves. The disease can be restricted to the leaf blade or may only appear on the petiole and rachis right away. Spots and discoloration areas can be smaller than in size, but under optimal conditions can grow much larger eventually forming lesions.
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Buddleja caryopteridifolia grows to 2 m in height in the wild, and bears small upright terminal panicles with relatively few flowers in the autumn. The colour of the sweetly scented flowers is generally pink or lilac. The grey-green opposite foliage, is similar to smaller forms of B. crispa, the leaf blade ovate to triangular and with an irregular toothed margin, shortly petiolate ; the species is named for the foliage which can resemble that of several species of the genus Caryopteris.
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The pinnae in the middle of the leaf blade are long and in width. The inflorescence is branched to the 1st degree, has a peduncle long and wide, and has a prophyll long, wide, and covered in a brown tomentum. The young inflorescence develops in a glabrous, lightly striated, woody spathe which is in length and has an enlarged portion at the end which is long wide and ending in a short, sharply pointed tip. The axis (width?) of the inflorescence is long.
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Calectasia browneana is an undershrub with stilt roots but without a rhizome. It grows to a height of about 60 cm with many very short side branches. Each leaf blade is 8.3-15.2 x 0.2-0.4 mm tapering to a short, sharp point on the end and densely covered with fine hairs. The base of the petals (strictly tepals) form a tube 7.2-8.0 mm long, while the outer parts spread outwards to form a pale blue-pink, papery star-like pattern.
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The basal leaves have a long petiole (which may be thickened and red, white, or yellow in some cultivars). The simple leaf blade is oblanceolate to heart-shaped, dark green to dark red, slightly fleshy, usually with a prominent midrib, with entire or undulate margin, 5–20 cm long on wild plants (often much larger in cultivated plants). The upper leaves are smaller, their blades are rhombic to narrowly lanceolate. The flowers are produced in dense spike-like, basally interrupted inflorescences.
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Each pinna has 25 to 100 pairs of pinnules, the smallest division of the leaf blade, each of which is narrow oblong to linear in shape, long and about wide. The inflorescence is a branching panicle with the flowers in spherical heads on peduncles long. Each head of flowers is in diameter and consists of fifteen to thirty individual yellow to bright yellow flowers. Flowering occurs from July to October and the fruit which develop are legumes or "pods" long and wide.
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Trees bear 20 to 35 leaves which are between in diameter. The leaves of S. magnifica are deeply divided in two almost to the base of the leaf blade, giving a butterfly-like appearance. They were described by British palm systematists William J. Baker and John Dransfield as "spectacular" and the most distinctive character of the genus. Unlike other members of the tribe Cryosophileae (which tend to have bisexual flowers), S. magnifica is monoecious—it produces both male and female flowers.
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In this form, as contrasted with the usual forma montanum, the leaf blade is yellow-green, the fronds continue highly dissected to the apex and do not come to a pointed tip, the fronds are shorter and more highly dissected than usual, and all fronds are sterile. Asplenium montanum readily forms hybrids with a number of other species in the "Appalachian Asplenium complex". In 1925, Edgar T. Wherry noted the similarities between A. montanum, lobed spleenwort (A. pinnatifidum), and Trudell's spleenwort (A.
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The shape of leaf blades in A. tutwilerae is quite variable. The leaves are green in color, not leathery (unlike some other Asplenium species), and both leaves and their rachides (central axes) are covered by hairs like those on the upper stipe. Each rachis is similar in color to the stipe at the base, turning green and dull towards the tip of the leaf. In fertile fronds, sori are covered with membraneous indusia, which are attached to the leaf blade at one edge.
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Melaleuca biconvexa grows to a height of (sometimes to ) and has fibrous to papery bark. Its leaves are arranged in alternating pairs (decussate), long and wide, narrow oval in shape. The leaves are distinctive in having the mid-vein in a groove with either side of the leaf blade curving up wing-like from this vein. The flowers are cream to white, at or near the ends of the branches in heads of 2 to 10 flowers, the heads up to in diameter.
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The leaf sheath has no pink, red, or purple tinting and the leaf blade can either be, smooth and hairless, or rough and sandpapery. The leaves are all produced from the base of the plant, and the one-seeded fruit, usually ranging from 1.6-2.2 millimeters, has no folds or dimples. The spikelets found in the plant are widely spread rather than clustered together, and the culms consist of about 4-8 spikelets. Spikelets are green because of the presence of 7-14 spreading perigynia.
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Melaleuca calyptroides is a small, low growing shrub sometimes reaching a height of . Its leaves are arranged alternately, linear in shape, almost circular in cross-section, long, wide with a leaf stalk the same width as the leaf blade. Most of the leaves are densely covered with distinct, raised oil glands. The flowers are a shade of pink to purple and appear singly or in small heads on the ends of branches which continue to grow after flowering, sometimes also in the upper leaf axils.
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As the common name of the species implies, the preferred host trees are maple tree. Adult females lay their yellow ovular eggs in groups of 10 to 40 on the underside of maple leaves. The emerging caterpillars, also known as the greenstriped mapleworm, mainly feed on the leaves of their host maple trees, particularly red maple, silver maple, and sugar maple. Since the caterpillars eat the entire leaf blade, in dense populations, caterpillars have been known to defoliate trees, resulting in aesthetic rather than permanent damage.
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A stunted rosette plant growing in an exposed site on Mount Bokor Leaves are sessile to sub-petiolate and coriaceous (leathery) in texture. The lamina or leaf blade is oblong to linear-lanceolate in shape and measures up to 35 cm in length by 8 cm in width. Its apex varies greatly, ranging from acute to obtuse and it may sometimes also be acuminate. The lamina is attenuate at the base, clasping the stem by around three-quarters of its circumference and rarely becoming decurrent.
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The leaves (blades) are a semi-glossy medium green to dark green. The cataphylls, which are formed around any new leaf as it is forming remain semi-intact after the new leaf blade is grown and measure 35 to 49cm (1.1 to 1.6 feet) in diameter. The petioles which are the supports for the leaf are either "D" or "U" shaped with 2 raised marginal ribs. The "D" or "U" shape is a description of the shape of the petiole if seen cut as a cross section.
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Dryopteris intermedia is a perennial fern that grows to a size of about tall and wide. At its base, it consists of an underground rhizome from which grow the fronds of the plant in a spiral-like arrangement. Each frond consists of a stipe (stalk) that is covered in light-brown scales towards the base and short glandular hairs further up. The stipes generally measure between 1/4 to 1/3 the length of the frond and support a leaf blade that is lance-oblong in shape.
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The leaves are alternate, leathery, dark green, very large, from long (up to long in M. dubia) and broad, often with holes in the leaf blade. The flowers are borne on a specialised inflorescence called a spadix, long; the fruit is a cluster of white berries, edible in some species. Large Monstera deliciosa They are commonly grown indoors as houseplants. The best-known representative of the genus, Monstera deliciosa, is also cultivated for its edible fruit which tastes like a combination of banana and pineapple.
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Mairia coriacea is a geophytic perennial herb of about high, with dense, silky, orange brown hairs on its growing points. It has a rizome with succulent, dark brown to black roots of up to about long and thick. It usually has up to about six leathery, bright lime-green leaves per growing point, which are seated or have a leaf stalk of up to long, and are flat or curve downwards. The leaf blade is mostly inverted egg-shaped, sometimes elliptic or broadly elliptic, long and wide.
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Melaleuca diosmifolia is a dense shrub sometimes growing to a height of . The leaves are arranged alternately, narrow oval or elliptical in shape, long, wide, crowded close together and lacking a stalk so that the leaf blade attaches directly to the stem. The flowers are arranged in heads near the ends of branches which continue to grow after flowering and sometimes in the upper leaf axils. There are 25 to 30 individual flowers in each head, the heads up to long and in diameter.
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Calectasia hispida is an undershrub without stilt roots but with a short rhizome from which it is able to form clones. It grows to a height of about 45 cm with many very short side branches. Each leaf blade is 3.9-10.3 x 0.4-0.7 mm tapering to a short, sharp point on the end and hispid (that is, covered with rigid, bristly hairs). The base of the petals (strictly tepals) form a tube 6.8-9.0 mm long, which, unlike most others in the genus, is glabrous.
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It is a spreading subshrub growing to high by broad. As an ornamental plant it is a spring-blooming favourite, often seen cascading over rocks and walls, or used as groundcover. The glossy, evergreen foliage forms a billowing mound, with many fragrant, pure white flowers in tight clusters for several weeks during spring and early summer. The leaf blade of the leaves is leathery, 1 to 3 rarely 5 inches long, 2 to 5 millimetres wide, oblong spatulate to lanceolate, obtuse with a pointed base.
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Overall the leaves of B. leopoldae are elliptical to circular in outline ranging up to long, though averaging between . The leaf width is typically but ranges up to . The long petioles narrow from base to leaf blade and meet the blade at a symmetrical to asymmetrical base which may be cordate to obtuse. The margin is serrated with larger primary teeth that are separated by 7 or less smaller subsidiary teeth, all of which have a variable morphology from pointing apically to pointing basally.
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This aroid plant is a perennial herb producing thick, erect stems up to 6 centimeters wide that branch from the bases and grow up to a meter tall. It produces bunches of leaves on long, sheathed petioles which are generally up to about 30 centimeters long but are known to reach 80. The wide, roughly heart-shaped leaf blade is up to 40 by 28 centimeters and has 4 main veins running from the center to the edge on each side. The plant rarely flowers.
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The holotype of Neviusia dunthornei is a complete leaf though the leaf blade is folded near the base, while the paratype is more fragmentary. Together the two compression- impression fossil leaves, preserved in light green-grey shale display the leaf shape, margin, and morphology of the vein structure and teeth. The overall morphology and structure of the N. dunthornei leaves compare to the living species known as the Shasta snow-wreath (N. cliftonii), being broadly ovate, with secondary veins subopposite and a similar overall vein patterning.
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The adult Profenusa thomsoni is black and about in length and fly-like in appearance. The whitish larva has short legs, dark markings on the first segment of the thorax, and two black spots on each of the second and third segments. It develops inside a leaf blade, the egg usually being laid close to the midrib and the larva hollowing out a "blotch"-shaped cavity. There are six instars, the last stage taking place on the ground as the larva searches out a place to pupate.
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For many years, it was considered the same plant as the similar European Salvia glutinosa (Sticky sage). Salvia nubicola reaches high and wide, growing upright, with fresh-green colored leaves that are triangular shaped, with the largest, approximately , growing at the base of the plant. The petiole is typically about the same length as the leaf blade. The plant puts out numerous long inflorescences holding pale yellow flowers, in whorls of two to six, that have finely spotted maroon markings on the upper lip.
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Viola decumbens is a small shrub with very fine granules on its green parts, and a woody base. The erect branching stems are up to high. It carries alternately set, slightly succulent, linear, green leaves long and ½—2 mm (0.02—0.08 in) wide with a pointed tip and an entire margin. The bracts (or stipules) to the right and left of the foot of the leaf proper are also linear, clinging to the leaf blade (or adnate), and with a small tooth on each side at the base.
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The lamina (leaf blade) is linear to lanceolate and measures up to 15.6 cm in length by 3.4 cm in width. Its apex may be acute or obtuse and is rounded at the base, clasping the stem for around half of its circumference. The lamina is green, while the midrib and tendril range in colour from green to red. Stewart McPherson observed only four terrestrial pitchers of N. pitopangii during his field studies at the type locality and their description is therefore based on this very small sample size.
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Melaleuca boeophylla is a twiggy shrub which grows to a height of with stems and leaves that are glabrous except when young. Its leaves are arranged alternately, linear to narrow egg-shaped and oval in cross-section, long, wide with the leaf blade having the same dimension as the stalk. The tip of the leaf is a rounded point and the oil glands are distinct. The flowers are a shade of pink to purple and arranged in heads on the ends of branches which continue to grow after flowering, sometimes also in the leaf axils.
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Nepenthes peltata is a scrambling plant typically growing to a height of 1 m, although stems up to 3 m long have been recorded. The species does not appear to produce a climbing stem. rosette plant, showing the peltate tendril attachment The lamina (leaf blade) is oblong in shape and reaches 50 cm in length by 9 cm in width. The apex of the lamina is rounded, while the base is abruptly contracted into the petiole, which is canaliculate and up to 7 cm long in mature plants.
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Roscoea cangshanensis is a perennial herbaceous plant. Like all members of the genus Roscoea, it dies back each year to a short vertical rhizome, to which are attached the tuberous roots. When growth begins again, "pseudostems" are produced: structures which resemble stems but are actually formed from the tightly wrapped bases (sheaths) of its leaves. Plants of R. cangshanensis are usually 22–30 cm tall, with three or sometimes four leaves. The hairless (glabrous) leaf blade is usually 7–24 cm long by 1.5–2.5 cm wide, but may be as short as 2 cm.
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The adult female leaf miner deposits eggs individually in the tissues of host plants, usually laying a total of 100 to 120 eggs. When these hatch, the larvae eat their way through the leaf tissue, leaving an intact layer of epidermis on the top and bottom of the leaf blade. The larvae passes through three instar stages before pupating. Adult flies feed on nectar and plant sap, the females gashing leaves to access the sap and the males sometimes feeding at holes made by the females, being unable to puncture the leaves themselves.
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Kunzea baxteri is a spreading shrub which usually grows to a height of between and has branches which are more or less hairy. The leaves are arranged alternately on a petiole long and have a leaf blade that is usually long, wide and oblong to elliptic in shape with hairs along the edges. The flowers are arranged in large, profuse, conspicuous, bottlebrush-like clusters, up to long and wide. The clusters usually contain between 16 and 30 flowers on the ends of branches which continue to grow during the flowering period.
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New Zealand has 22 endemic species of Chionochloa, including Chionochloa rubra, which has a distinctive appearance from other members in the genus. C. rubra has a long living span, meaning that there is rarely any dead foliage around the plant — giving the species a clean, sleek and vertical look. The plant will grow up to 1–1.2m high in rich moist ground, with seed heads reaching even taller. The leaf blade themselves grow up to 1m long and 1.2mm in diameter, and the plant width itself is 50 cm in diameter (with little rhizomatous spread).
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The paddle was found broken into several pieces, but except for a few flaws was extremely well preserved. The excellent preservation status of the paddle's wood was caused by a very low level of oxygen in the lake's humid sediments that quickly covered the paddle, which subsequently kept the growth of micro organisms to a minimum. Under normal oxygen conditions, fungi, bacteria, and insects would have caused a biological degradation of the wood in short time. Only the end of the handle is missing and a corner of the paddle's leaf (blade) is broken off.
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The majority of this grass is planted in vegetative forms (such as plugs and sod), as seeds are not usually available due to production difficulties. Captiva St. Augustine: :Developed by the University of Florida in 2007,LE Trenholm and KevinKenworthy Captiva St. Augustine Grass University of Florida Captiva is a chinch bug resistant St. Augustine cultivar. It has a lush, dark-green color with a dense canopy and a massive root system. Because it has a slow leaf- blade growth and lateral spread, the requirement for mowing is reduced.
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Eremophila tietkensii is a rounded or flat-topped shrub which grows to a height of between with its branches and leaves covered with a layer of fine grey hairs pressed against the surface. The leaves are arranged alternately, well spaced along the branches, grey-green and have a flattened stalk that is long. The leaf blade is lance-shaped to egg-shaped, mostly long, wide and has a smooth surface. The flowers are borne in groups of up to 4 in leaf axils on a hairy stalk which is usually long.
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Myriopteris aemula was first described by William Ralph Maxon in 1908, as Cheilanthes aemula, based on material collected by Edward Palmer in 1907 from Ciudad Victoria. He distinguished it from Cheilanthes microphylla, found growing with it, by its greater degree of cutting and the triangular shape of the leaf blade. The specific epithet aemula means "rivalling" or "emulating", and is believed to refer to its "emulation" of the C. microphylla found growing with it. The development of molecular phylogenetic methods showed that the traditional circumscription of Cheilanthes, including that used by Maxon, is polyphyletic.
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Schippia concolor is a medium-sized, single-stemmed palm with fan-shaped (or palmate) leaves. The stem, which is tall and in diameter, is usually covered by the remains of old, dead leaves (but in areas where fires are frequent the corky bark of the stem may be exposed throughout the length of the stem). Individuals bear six to 15 leaves which consist of a petiole and a roughly circular leaf blade which is about in diameter divided into 30 leaflets. The fruit are white, spherical and up to in diameter.
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N. fossatus can similarly detect the approach of a predator such as the starfish Pisaster brevispinus. Its reaction is either to crawl away rapidly, rocking its shell from side to side, or do a spectacular flip or series of flips, catapulting itself with its muscular foot. Nassarius fossatus lays its eggs on eelgrass or some other solid object on the surface of the mudflats. First it cleans a portion of leaf blade with its radula, then it forms a fold in its foot connecting its genital pore with its mucous pedal gland.
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Coniothyrium hellebori is a fungus that causes the most common fungal disease for helleborus species known as Hellebore black spot or leaf spot. The disease is most common not only in botanical and ornamental gardens, but also in hellebore nurseries as well. Visible symptoms include blackish-brown spots that often appear as rings on the leaf blade or at the margins of the leaf. The spots will continue to grow larger as the disease progresses, retaining an elliptical or circular shape and turning a dark brown or black color.
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These appendages are often approximately at a right angle to the petiole. In some northern forms (sometimes regarded as a separate species, C. alata) however, the appendages are in the same plane as the remainder of the leaf blade. The solitary actinomorphic (radially symmetric) flowers of 3 cm or more across have five to eight spreading, ivory to pallid yellow, petal-like sepals of ½–1½ cm long and 2–8 mm wide, and a faint scent of honey. There are between thirty and seventy five stamens, with broad filaments.
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It is commercially available in pots or seed form and is suitable for small gardens or as a border plant and is also suitable as a pot plant but needs to be moved indoors for the winter months in cooler areas. Once it is established it is drought tolerant, grows in full sun or shade and moderately frost tolerant. The plant needs space for plenty of air flow around the base to assist to prevent Ink disease which blackens the leaf blade. Clumps of the plant can be divided in the summer.
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C. prostratus var. occidentalis (McMinn) occurs in the Coast Ranges and Klamath Mountains of northern California, ranging in elevation from 270–1400 m. It forms as more of a low mound than a mat, exhibits a leaf blade folded lengthwise, and has fruit with spreading horns. C. prostratus var. prostratus is the more widespread of the two subspecies, covering the majority of the range of C. prostratus. It ranges in elevation from 800–2700 m throughout the Klamath Mountains, Coast Ranges, High Cascades, High Sierra Nevada, and the Modoc Plateau. C. prostratus var.
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Each blade has 7 to 12 pairs of pinnae, which are narrowly oblong, with a short stalk at the base, or none at all, connecting them to the rachis. The ultimate segments are widest near the base or the middle, and the dark color of their stalks usually passes into the leaf, rather than halting at a joint at the segment base. Hairs are not present on the leaf blade. The sori occur along the veins, starting from halfway to two-thirds of the way out from axis to edge.
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London plane in NMSU The London plane is a large deciduous tree growing , exceptionally over tall, with a trunk up to or more in circumference. The bark is usually pale grey-green, smooth and exfoliating, or buff-brown and not exfoliating. The leaves are thick and stiff-textured, broad, palmately lobed, superficially maple-like, the leaf blade long and broad, with a petiole long. The young leaves in spring are coated with minute, fine, stiff hairs at first, but these wear off and by late summer the leaves are hairless or nearly so.
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C. pedunculata is a shrub or small tree growing from 3 to 4 m high. The twigs, the petioles and the underside of the leaf blade have a covering of stalked stellate hairs, while the upper surface of the leaf has a covering of stellate and simple hairs which become sparse when older. The Leaf blades are about 6-18 x 3-6 cm, and there are small, pale yellow, glands on the underside of the leaf. The bottom part of the leaf has smooth margins but the remainder is toothed.
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The 40–50 species vary enormously in leaf size. The giant rhubarb, or Campos des Loges (Gunnera manicata), native to the Serra do Mar mountains of southeastern Brazil, is perhaps the largest species, with reniform or sub-reniform leaves typically long, not including the thick, succulent petiole which may be up to in length. The width of the leaf blade is typically , but on two separate occasions cultivated specimens (In Devon, England in 2011 and at Narrowwater, Ulster, IrelandThe Garden (London) Vol. 63 # 1631 (February 21, 1903) p. 125.
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The leaves are arranged at the end of its many branches, attached in an overlapping sheath, and are bright green, perhaps with red patches. These assist in maintaining the meadows cohesion by protecting against erosion from the ocean's currents. Each leaf blade may be up to 75mm long, with a uniform width of 2.5 to 6mm, four or five of the ribbon-like leaves rise upward from the many branches. The form of the sheath, and the longer leaves, differentiate this species from its cogener ', and it is found in rougher oceans than that species.
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Adiantum viridimontanum, commonly known as Green Mountain maidenhair fern, is a rare fern found only in outcrops of serpentine rock in New England and Eastern Canada. The leaf blade is cut into finger-like segments, themselves once-divided, which are borne on the outer side of a curved, dark, glossy rachis (the central stalk of the leaf). These finger-like segments are not individual leaves, but parts of a single compound leaf. The "fingers" may be drooping or erect, depending on whether the individual fern grows in shade or sunlight.
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They are not branched, but as new plants can form at root tips, a tightly packed cluster of stems may give the appearance of branching. The rhizomes are covered in dark brown, narrowly triangular scales, from long and from 0.2 to 0.4 millimeters across, with untoothed edges. They are strongly clathrate (bearing a lattice- like pattern). The stipe (the stalk of the leaf, below the blade) is dark brown to purplish-black and shiny at the base, gradually turning dull green as it ascends to the leaf blade.
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The stipe is from long, and may be from 0.5 to 1.5 times the length of the blade. Dark, narrowly lance-shaped scales and tiny hairs are present only at the very base of the stipe, which is slender and fragile, and lacks wings. The leaf blade is thick and hairless, and of a dark blue-green color; the rachis (leaf axis), like the stipe, is a dull green, with occasional hairs. The blade is triangular or lance-shaped, with a squared-off or slightly rounded base and a pointed tip.
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The ants are aggressive and have a very painful sting. They protect the host tree from herbivorous insects that feed on leaves, and their presence on the tree give rise to its common name of "ant tree". The worker ants detect vibrations when an insect lands on a leaf blade, and rush out of their domitia to ambush it. A large insect may be stung by several ants, spread-eagled and cut in pieces; some ants may feed on the hemolymph while others may carry off bits of prey.
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The bark of the stem is grayish brown, and the stipules, which are outgrowths on either side of the base of a leaf stalk, are thin and deciduous. The leaves of the shrub are alternate and deciduous. The petiole, which attaches the leaf blade to the stem, is approximately 3–5 mm long. The leaf blades vary between 35–74 mm longitudinally and 10-32 mm laterally and come in a diverse shapes, including wide, narrowly elliptic to lanceolate, eventually narrowing to acute to obtuse point at the apex.
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Stipules at the base of the leaf stems are absent, while the leaf stems themselves are about 1 cm long and are covered with felty hairs. The leaf blades are robust, large, and have a long inverted egg-shape (7–12 × 3–5½ cm). The base is rounded to slightly wedged, the margin is slightly serrated, particularly in towards the tip and the tip is pointed or blunt. The top of the leaf blade is darker green and without hair, the underside is lighter and has some hair.
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Mairia petiolata is a tufted, variably hairy, perennial plant of up to assigned to the daisy family. Its leaves are in a ground rosette, and have a stalk of mostly long and an inverted egg-shaped to elliptic, 6–9 cm (2.6–4.6 in) long and wide leaf blade, with a toothed margin. It mostly has two flower heads at the tip of the branches of each erect, dark reddish brown scape. The flower heads have a bell- to cup-shaped involucre that consists of 20–24, purplish, overlapping bracts in 3–4 whorls.
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The leaves of a lateral shoot are further twisted at their petioles to form two pectinate rows in a horizontal plane around the shoot. The leaf petioles in Retrophyllum are uniquely twisted on the lateral shoots in opposite directions on each side of a shoot orienting the leaf blades with the adaxial or ventral surface upwards on one side of the shoot and the abaxial or dorsal surface upwards on the opposite side of the shoot. The leaf blade varies in shape from lanceolate to narrowly ovate. The leaves have conspicuous midribs and are amphistomatic with stomata present on both sides.
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The leaf axils are sometimes densely woolly. The leaf blade varies in outline between narrowly or broadly inverted egg-shaped and narrowly elliptic to elliptic, mostly 4–10 cm (1–4 in) long (full range 3–12 cm) and 1–3 cm (0.6–1.4 in) wide (full range –5 cm). The leaves have a blunt to pointy tip and a margin that is rolled under, with rounded or pointy teeth or is sometimes almost entire with some peg-like extensions. The upper surface shows a distinct main vein, is hairless or has some dispersed woolly hairs.
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As with P. wayuuorum, P. cerrejonense is known from only one partial leaf and specimen ING-0804, is also from locality 0315. The specimen is incomplete with only portions of the tip and middle area of the leaf blade known. The overall size of the leaf was over , with an acuminate tip and smooth margin. P. cerrejonense has a vein structure similar to that of Anthurium species which form secondary veins which group into two clusters of veins parallel to the outer margin of the leaf and the secondary vein structure is used to distinguish P. cerrejonense from P. wayuuorum.
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The leaves of Pachypodium bicolor are subsessile, very much stalkless and attached directly at the base of the leaf, and confined to the apices of the branchlets. The leaves can be petiole, having a stalk by which a leaf is attached to a stem, at 0 mm to 2 mm (up to 0.08 in) long; meaning they have a very short stalk to the leave, if at all. Pubescent --hairy--the leaf blade is medium green with a pale green midrib above and a pale green below along with reticulate venation beneath when fresh. When the leaves are dried they are papery.
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Kunzea pulchella is a spreading shrub which usually grows to a height of between , often with few side-branches, the branches more or less hairy. The leaves are arranged alternately on a petiole up to long and have a leaf blade that is usually long, wide and egg-shaped to lance-shaped with the narrower end towards the base. Both sides of the leaves are silky-hairy. The flowers are arranged in loose groups of 6 to 14, each flower on a stalk long on the ends of branches which often continue to grow during the flowering period.
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The leaves are arranged alternately around the stem. In the lower leaves the leaf stalk is 10–15 cm long and the leaf blade is oval in outline, 15–30 cm long and 10–22 cm wide, twice compounded or very deeply incised, first into three to eleven leaflets, themselves deeply divided or lobed into two to eleven secondary lobes (this is called biternate). These are linear to linear-lanceolate in shape and have an entire margin or incidentally may have a few teeth. Usually each lower leaf has between twenty five and one hundred segments (full range 17 to 312).
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The leaf blade is thickish oder slightly fleshy, and may be triangular, triangular to narrowly triangular, hastate, rhombic, or lanceolate, with entire to dentate margins. The axillary and terminal inflorescences consist of spicately or sometimes paniculately arranged compact glomerules of flowers, ebracteate or in the axils of leaf-like bracts. Usually there a two types of flowers: The terminal flowers are bisexual, with 3-5 nearly free perianth segments, 1 (-5) stamens and an ovary with 2 (-3) stigmas. The lateral flowers are usually female, with 3 (-4) variously connate perianth segments, missing (-1) stamens and 2 stigmas.
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They are flowerless, vascular, terrestrial or epiphytic plants, with widely branched, erect, prostrate or creeping stems, with small, simple, needle-like or scale-like leaves that cover the stem and branches thickly. The leaves contain a single, unbranched vascular strand and are microphylls by definition. The kidney-shaped or reniform spore-cases (sporangia) contain spores of one kind only (isosporous, homosporous) and are borne on the upper surface of the leaf blade of specialized leaves (sporophylls) arranged in a cone-like strobilus at the end of upright stems. The club-shaped appearance of these fertile stems gives the clubmosses their common name.
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Elachista argentella is a moth of the family Elachistidae found in all of Europe, except the Balkan Peninsula. Mined leaf blade of Bromus erectus Larva The wingspan is . The moth flies from May to July depending on the location. The larvae feed on a number of different species of grass including Agrostis, Avenula pratensis, Avenula pubescens, Brachypodium pinnatum, Brachypodium sylvaticum, Bromus erectus, Bromus sterilis, Calamagrostis epigejos, Dactylis glomerata, Deschampsia cespitosa, Elymus hispidus, Elymus repens, Festuca ovina, Festuca rubra, Festuca trachyphylla, Festuca valesiaca, Holcus lanatus, Holcus mollis, Koeleria glauca, Koeleria grandis, Koeleria macrantha, Leymus arenarius, Phalaris arundinacea, Phleum and Poa pratensis.
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Frond dimorphism refers to a difference in ferns between the fertile and sterile fronds. Since ferns, unlike flowering plants, bear spores on the leaf blade itself, this may affect the form of the frond itself. In some species of ferns, there is virtually no difference between the fertile and sterile fronds, such as in the genus Dryopteris, other than the mere presence of the sori, or fruit-dots, on the back of the fronds. Some other species, such as Polystichum acrostichoides (Christmas fern), or some ferns of the genus Osmunda, feature dimorphism on a portion of the frond only.
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There is a basal rosette of many linear leaves of 2–20 cm long and ¼–¾ cm wide, which may be entire or are pinnately incised, creating linear lobes mostly directed towards the tip. The leaves are covered in long soft woolly hairs (pilose) lying on the surface, giving both leaf surfaces a greyish green color. The leaf tips may be blunt or pointy, and the leaf blade gradually narrows to the main vein at the base of the leaf. From the heart of the rosette one or a few, strongly branched, erect, again woolly haired and greyish green flowering stems rise.
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Florets in the centre of the disc typically have no or very reduced petals. In some plants such as Narcissus the lower part of the petals or tepals are fused to form a floral cup (hypanthium) above the ovary, and from which the petals proper extend. Petal often consists of two parts: the upper, broad part, similar to leaf blade, also called the blade and the lower part, narrow, similar to leaf petiole, called the claw, separated from each other at the limb. Claws are developed in petals of some flowers of the family Brassicaceae, such as Erysimum cheiri.
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The young twigs are covered with very fine hairs (puberulent). The blade of the leaves can be half an inch to three inches (2–8 cm) long, usually about two inches (5–6 cm). They are lanceolate to ovate, unequal at the base, leathery, entire to serrate (tending toward serrate), clearly net-veined, base obtuse to more or less cordate, tip obtuse to acuminate, and scabrous, with a dark green upper surface and a yellowish- green lower surface. The small stalks attaching the leaf blade to the stem (the petioles) are generally about 5 to 6 mm long.
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Silvery spleenwort has pinnately divided yellowish green leaves arising from a stout, green, slightly brown hairy and scaly stem. The stem is typically grooved on the upper side, much shorter than the leaf blade and darker colored near its base, being dark red or brown, as the stem reaches the leaflets it becomes a pale green color. The leaves are broadest in the middle with a long pointed tip and tapering base with the lowest pair of leaflets generally pointing downward. The tapering and downward pointed bottom leaves are a diagnostic characteristic for helping to distinguish this fern from similar ferns.
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The leaf blade is a lanceolate shape with a length of and a width of with a base that tapers to the petiole. It blooms between May and November producing terminal compound inflorescences with seven buds per umbel. The elongated, curved, oblong to fusiform mature buds are in length and , The green to yellow buds have so scarring and are ribbed longitudinally with a conical to pyramidal shaped operculum with inflexed stamens and white flowers. The fruits that form afterward are cylindrical to barrel-shaped with a length of and a width of with a descending disc and three or four valves.
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Their number varies strongly over time from none or few to up to thirty during flowering. The firm, upright leaf blades are line-shaped, narrowly ellipse-shaped or very narrowly inverted egg-shaped, long and wide, with a pointy tip and at the base gradually narrowing to a very long leaf stalk. Both surfaces of the leaf blade are hairless, except for the inner side of the leaf stalk that is set with silvery woolly hairs. The leaves have entire, flat margins or these are rarely rolled downwards, with single main vein and sometimes with two indistinct marginal veins.
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Calectasia obtusa is an undershrub with stilt roots 30-55 mm long but no rhizome. It grows to a height of about 50 cm with several short side branches. Each leaf blade is glabrous except at the margins, 4.5-8.5 x 0.5-0.9 mm, often pressed against the stem, the ends usually blunt and only rarely tapering to a short, sharp point. The base of the petals (strictly tepals) form a tube 7.7-8.8 mm long, while the outer part of the petals are wine red with blue margins fading to pale blue with age and spreading outwards to form a papery, star-like pattern.
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The single known specimen of P. wayuuorum, ING-0902, was recovered from locality 0315, a by lens of fine grained sandstone in the Cerrejón Formation. The specimen is missing the basal portion of the leaf but shows a smooth margin in the preserved regions of the leaf blade and was either cordate or sagittate. The overall size of the leaf was , and has a vein structure similar to that of Anthurium species that form secondary veins which group in single cluster of veins parallel to the outer margin of the leaf. This secondary vein structure is used to distinguish P. wayuuorum from P. cerrejonense.
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After successful infection, the leaf blade is colonized and sporulation will occur through the stomata. One lesion produces 4–6 spore crops over a 3–5 month period releasing 300–400,000 spores. While the predominant hypothesis is that H. vastatrix is heteroecious, completing its life cycle on an alternate host plant which has not yet been found, an alternative hypothesis is that H. vastatrix actually represents an early-diverging autoecious rust, in which the teliospores are non-functional and vestigial, and the sexual life cycle is completed by the urediniospores. Hidden meiosis and sexual reproduction (cryptosexuality) has been found within the generally asexual urediniospores.
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Although Bacon and Baker do not provide a key to the nine species of Saribus, one can be found in the key provided by Dowe in his 2009 Livistona monograph, where the eight species which were transferred to Saribus are split from the rest in the beginning of the key. S. woodfordii keys out together with S. chocolatinus, S. papuanus and S. merrillii which all have inflorescences that divide to the third order. S. papuanus and S. merrillii have yellow flowers as opposed to red. S. woodfordii can be distinguished from S. chocolatinus by having somewhat hanging ends of the leaf segments, as opposed to rigid, a deeply undulate leaf blade.
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Nicobariodendron sleumeri is a dioecious evergreen tree of 8–35 m high, with simple, alternately set leaves without stipules. A leaf consists of a leaf stalk of 3–8 mm long, and an oblong oval to oblong inverted egg-shaped, leathery, hairless and shiny green leaf blade of 5½-10 × 2–4 cm, with a foot that gradually narrows into the leaf stalk, an entire margin, and a blunt end that abruptly changes in a pointed tip of ½-1¼ cm. The leaf is pinnately veined with five to nine pairs of secondary veins. Male flowers sit in spikes in the axils of the leaves.
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Leaves are light green above and glaucous pale green below. In the lowest leaves, the leaf stalk is 9–15 cm long, while the leaf blade is twice compounded or deeply divided (or biternate), with the primary leaflets on a short stem of 2–3 cm, the leaflet blades 6-12 × 5–13 cm, those usually incised almost to the base, having three segments, at base extending along the stalk until disappearing (or decurrent). Each of the segments 4-9 × 1½-4 cm, mostly incised to midlength into three lobes of 2-5 × ½-1½ cm, with an entire margin or one or two teeth, pointy at their tips.
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The plant's initial response to contact with prey consists of thigmotropic (movement in response to touch) tentacle movement, with tentacles bending toward the prey and the center of the leaf to maximize contact. D. anglica is also capable of further movement, being able to bend the actual leaf blade around prey to further the digestion process. Tentacle movement can occur in a matter of minutes, whereas the leaf takes hours or days to bend. When something gets caught, the tentacles touching the prey exude additional mucilage to mire down the prey, which eventually dies of exhaustion or is asphyxiated as the mucilage clogs its tracheae.
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The trees of D. turbinatus are lofty, growing 30-45m tall. The bark is gray or dark brown, and is shallowly longitudinally fissured and flaky. Branchlets are glabrescent. The leaf buds are falcate, with both buds and young twigs densely gray and puberulous. The stipules are 2–6 cm, densely, shortly dark grayish or dark yellow puberulous; the petiole is 2–3 cm, densely gray puberulous or glabrescent; the leaf blade is ovate-oblong, 20-30 × 8–13 cm, leathery, glabrous or sparsely stellate pubescent, lateral veins are in 15-20 pairs conspicuously raised abaxially, base rounded or somewhat cordate, margin entire or sometimes sinuate, apex acuminate or acute.
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The leaf blade is usually dissected, ternate or pinnatifid, but simple and entire in some genera, e.g. Bupleurum. Commonly, their leaves emit a marked smell when crushed, aromatic to foetid, but absent in some species. The defining characteristic of this family is the inflorescence, the flowers nearly always aggregated in terminal umbels, that may be simple or more commonly compound, often umbelliform cymes. The flowers are usually perfect (hermaphroditic) and actinomorphic, but there may be zygomorphic flowers at the edge of the umbel, as in carrot (Daucus carota) and coriander, with petals of unequal size, the ones pointing outward from the umbel larger than the ones pointing inward.
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The apex (tip) of the leaf blade is obtuse (rounded) or subacute (slightly pointed), the margin is slightly sinuolate (wavy), and the base is broadly cordate. The upper leaves on the inflorescence stem are smaller and are ovate in shape. Flowers The inflorescence is a large, diffusely branched (once or twice), densely-flowered panicle up to 1m tall, with the flower clusters usually axillary, less commonly terminal (at the end of the racemes). The small flowers have no bracts, are pale yellowish in colour, have a diameter of , have a filiform (wiry), 3-5mm long pedicel which is jointed below middle, and have elliptic- shaped tepals.
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Cadaba farinosa is a usually much branched shrub, mostly high, but under favorable circumstances a shrub of or a tree up to . It has a smooth, reddish brown bark, while young branches appear powdery due to scales or short spreading hairs. The simple and entire leaves are alternate set along the branches, and have narrow, persistent stipules of up to 1½ mm (0.06 in) long, at both sides of an up to long leaf stalk, which carries an oblong or elliptical leaf blade of long and wide, rounded or pointed with a short stiff tip. When young, the leaves appear powdery, but they become gradually hairless.
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Caltha palustris is a 10–80 cm high, hairless, fleshy, perennial, herbaceous plant, that dies down in autumn and overwinters with buds near the surface of the marshy soil. The plants have many, 2–3 mm thick strongly branching roots. Its flowering stems are hollow, erect or more or less decumbent. The alternate true leaves are in a rosette, each of which consist of a leaf stem that is about 4× as long as the kidney-shaped leaf blade, itself between 3–25 cm long and 3–20 cm wide, with a heart-shaped foot, a blunt tip, and a scalloped to toothed, sometime almost entire margin particularly towards the tip.
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The leaf blade is inverted egg-shaped to elliptic, 6–9 cm (2.6–4.6 in) long and wide. The tip is mostly sharply, rarely bluntly pointy, the base tapering gradually to a point (or attenuate), the margin with coarse and irregular teeth, perhaps somewhat lobed, seldomly almost entire, rolled down. On the underside a netted structure of veins is visible but on the upper surface, only a single main vein can be distinguished. The leaves are often coloured dark red, both surfaces may be hairless or set with few or many short woolly hairs, but the leaf surfaces are always visible through the indumentum.
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Roscoea alpina is a perennial herbaceous plant. Like all members of the genus Roscoea, it dies back each year to a short vertical rhizome, to which are attached the tuberous roots. When growth begins again, "pseudostems" are produced: structures which resemble stems but are actually formed from the tightly wrapped bases (sheaths) of its leaves. R. alpina is one of the smaller members of the genus; plants are 10–20 cm tall, with four to six leaves. The first two or three leaves consist only of a sheath; the remaining two or three have in addition a smooth (glabrous) leaf blade, free from the pseudostem, 3–12 cm long by 1.2–2 cm wide.
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Corymbia trachyphloia is a tree that typically grows to a height of and forms a lignotuber. It has rough, brown and greyish bark on the trunk, often also on the larger branches. Young plants and coppice regrowth have lance-shaped, glossy green leaves that are paler on the lower surface, long, wide and petiolate, the petiole is attached to the underside of the leaf blade. Adult leaves are usually glossy dark green, paler on the lower surface, narrow lance-shaped to lance-shaped, long and wide, tapering to a petiole long, The flower buds are arranged on a branched peduncle long, each branch of the peduncle with seven buds on pedicels long.
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Depending on environmental conditions, N. mantalingajanensis may grow as a compact rosette or produce an upright stem 30–60 cm tall. Internodes are circular in cross section and up to 1 cm in diameter. The species does not appear to produce a climbing stem. A particularly globose lower pitcher of this species Leaves are petiolate to sub-petiolate and coriaceous in texture. The lamina (leaf blade) is broadly lanceolate in shape and can reach 20 cm in length by 6 cm in width. The apex of the lamina is typically acute or obtuse, but may be sub-peltate, with the point of tendril attachment being up to 4 mm from the apex.
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A. distachyos, habit, showing aerial and submerged parts It is an aquatic plant growing from a tuberous rhizome. The often mottled leaves float on the water surface from a petiole up to 1 m long from the rhizome; the leaf blade is narrow oval, 6–25 cm long and 1.5–7.7 cm broad, with an entire margin and parallel veins. The flowers are produced on an erect spike with two branches at the apex like a 'Y', held above the water surface; they are sweetly scented, with one or two white petal-like perianth segments 1–2 cm long, and six or more dark purple-brown stamens.Flora of NW Europe: Aponogeton distachyosBlamey, M. & Grey-Wilson, C. (1989).
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Eremophila virens is an erect shrub which grows to a height of between with branches that are glabrous apart from matted white to yellowish hairs around the bases of young leaves. The leaves are arranged alternately along the branches and have a stalk long which has a furrow on the upper surface and is densely covered with white to yellowish, matted hairs. The leaf blade is sticky, lance-shaped to egg-shaped, folded lengthwise with a tapered end, mostly long, about wide, glabrous and sometimes with small teeth along the edge. The flowers are borne singly or in groups of up to 3 in leaf axils on sticky, S-shaped stalks that are .
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The leaf blade has a length of 30 to 60 cm and a width of 10 to 20 cm. The parallel leaf veins arise from the midrib (not typical of monocots). The leaves are broad, green or violet green, with petiolesshort and elliptical sheets, which can measure 30 to 60 cm long and 10 to 25 cm wide, with the base obtuse or narrowly cuneate and the apex is shortly acuminate or sharp. The surface of the rhizome is carved by transverse grooves, which mark the base of scales that cover it; from the lower part white and apex rootlets emerge, where there are numerous buds, the leaves sprout, the floral stem and the stems.
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Salvia recognita is a woody-based perennial that is endemic to central Turkey, typically growing in light shade at the base of cliffs, at elevations of less than 4,000 feet. It has recently been found to contain a low concentration of Salvinorin A. A mass of divided leaves forms a small to medium basal clump, with leaves ranging in size from 3-4 inches to nearly 1 foot long, with three or more leaflets. The light green leaves are covered with thick hairs, giving it a grayish cast and thick texture, with each leaf blade having a wine- colored petiole. The flowers are cyclamen-pink, growing in whorls, with calyces that are covered in glands and hairs.
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Trees 10–30 m tall; trunk 10–50 cm dbh, with narrow buttresses ca. 2 m tall; bark smooth, white to gray with dark lenticels. Branchlets light brown-gray, lenticellate; stipules ca. 4 mm long. Petioles 0.6-1.2 cm long; leaf blades, oblong to elliptic, 7–26 cm long, 2.6-10.5 cm wide, apex acuminate, base obliquely attenuate to rounded, margins entire, chartaceous to subcoriaceous when dry, dull dark green above, dull light green beneath, glabrous and smooth on both sides, lateral veins 3-5, palmately veined at the base of the leaf blade. Inflorescences axillary compound dichasia, 1-2.5 cm long, with 8-17 flowers, the perfect flowers toward the apex and staminate flowers toward the base.
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The winging of the stipe extends up the rachis; it is variously described as taking the form of parallel, cartilaginous ribs, with a narrow, green, leafy wing, the ribs fusing into a wing towards the tip of the leaf, or a whitish to tan wing similar in dimensions to that of the stipe. The blade is cut into pinnae throughout its length, from 20 to 40 pairs per leaf. The pinnae are sessile (stalkless) or have minute stalks and are rectangular in shape, tapering slightly toward the tip. In North American and Mexican material, those in the middle of the leaf blade measure from in length (rarely as small as ) and from in width.
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Helophytes, rarely rheophytes, with thick creeping rhizome; leaf blade simple, ovate to almost linear, fine venation transverse-reticulate; spathe tube with connate margins; spadix entirely enclosed in spathe tube; flowers unisexual, perigone absent. Differs from Cryptocoryne in having female flowers spirally arranged (pseudo- whorl in Lagenandra nairii, whorled in Lagenandra gomezii) and free; spathe tube "kettle" with connate margins (containing spadix) occupying entire spathe tube; spathe blade usually opening only slightly by a straight or twisted slit; berries free, opening from base; leaf ptyxis involute.Simon J. Mayo, Josef Bogner, Peter C. Boyce: The Genera of Araceae. 1. published, Royal Botanic Gardens/ Kew Publishing, London 1997, (Full-text as PDF-file; Continental Printing, Belgium 1997).
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The leaf blade is oval in outline, usually long and wide, wedge- to hart-shaped at its foot, variably incised, form shallowly lobed to multiply dissected, the later leaves often more complex. The segments at the margins of the leaf-outline, can be thread-thin to oval, entire of with teeth around the margin, and the tip pointy of rounded. The upper leaf surface may be sofly hairy or almost without, except for the margins and veins. Each plant may carry one to three inflorescences, consisting of a long peduncle with few to many small, pointy, simple membraneous bracts long and 1½–4 mm (0.06–0.16 in) wide, topped by a simple umbel of usually between five and thirty, sometimes even fifty flowers.
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Old English a or æ in close position became in Older Scots, remaining so, although or occasionally occur, for example Modern Scots: back, bath, blad (leaf/blade), cat, clap, hack, mak (make), ram, rax (stretch), tak (take), wall (well for water), wash, watter (water) and waps (wasp) from bæc, bæþ, blæd, catt, clappian, haccian, macian, ram, raxan, tacan, wælla, wæsċan, wæter, and wæps. Similarly with Norse bag, flag (flagstone) and snag and Dutch pad (path). Also before and , for example Modern Scots: can, lang (long), man, pan, sang (song), sank, strang (strong), than (then) and wran (wren) from cann, lang, mæn, panne, sang, sanc, strang, þanne and wrænna. Similarly with Norse bann (curse), stang (sting), thrang (busy) and wrang (wrong).
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Both leaf blade and petiole structure influence the leaf's response to forces such as wind, allowing a degree of repositioning to minimize drag and damage, as opposed to resistance. Leaf movement like this may also increase turbulence of the air close to the surface of the leaf, which thins the boundary layer of air immediately adjacent to the surface, increasing the capacity for gas and heat exchange, as well as photosynthesis. Strong wind forces may result in diminished leaf number and surface area, which while reducing drag, involves a trade off of also reducing photosynthesis. Thus, leaf design may involve compromise between carbon gain, thermoregulation and water loss on the one hand, and the cost of sustaining both static and dynamic loads.
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Pentadiplandra brazzeana is a monoecious shrub of maximally , but can also develop into a liana, climbing up to high in the trees. The shrub morph usually has a mass of branched bulging roots, while the liana morph has a large, fleshy tuber. The branches are without hair and carry alternately set, simple and entire leaves, without stipules at the base of the ½–1 cm (0.2–0.4 in) long leaf stalk. The hairless leaf blade is elliptical to oblanceolate, long and 1½–5 cm (0.6–2 in) wide, with a wedge- shaped base, a pointed tip, a dull or shining dark green upper surface and a dull dark green lower surface, and a central vein that branches feather-like into five to eleven pairs of side veins.
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He coined the generic name from the Greek roots eu and calyptos, meaning "well" and "covered" in reference to the operculum of the flower bud which protects the developing flower parts as the flower develops and is shed by the pressure of the emerging stamens at flowering. It was most likely an accident that L'Héritier chose a feature common to all eucalypts. The name obliqua was derived from the Latin obliquus, meaning "oblique", which is the botanical term describing a leaf base where the two sides of the leaf blade are of unequal length and do not meet the petiole at the same place. E. obliqua was published in 1788–89, which coincided with the first official European settlement of Australia.
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Ranunculus allenii grows to about in length, and is a perennial herb that is caespitose (grows in dense clumps). The roots are filiform (very thin in diameter), approximately 0.2 to 0.8 mm thick. Ranunculus allenii grows from a caudex (a thick short stem at ground level), with trichomes that either lay flat or spread out. Its basal leaves are mostly reniform (kidney shaped) and marcescent, while the cauline leaves (leaves of the stem) are linear and are positioned alternately. The petioles connecting the leaf blade to the stem are about 50 to 80 mm long. Leaf blades are flat, about 14 to 21 mm in length and 17 to 28 mm in width, and have a smooth surface on top but are pubescent beneath.
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Grasses grow from the base of the leaf-blade, enabling it to thrive even when heavily grazed or cut. In many climates grass growth is seasonal, for example in the temperate summer or tropical rainy season, so some areas of the crop are set aside to be cut and preserved, either as hay (dried grass), or as silage (fermented grass). Other forage crops are also grown and many of these, as well as crop residues, can be ensiled to fill the gap in the nutritional needs of livestock in the lean season. Cattle feed pellets of pressed alt=Cattle feed pellets Extensively reared animals may subsist entirely on forage, but more intensively kept livestock will require energy and protein-rich foods in addition.
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One potentially distinguishing character is the shape of the ultimate segments in the middle part of the leaf blade, which are oblong in A. pedatum and long-triangular or reniform (kidney-shaped) in A. viridimontanum and some specimens of A. aleuticum. Furthermore, A. viridimontanum can grow in both shade and sun, while A. pedatum grows in shade only. Adiantum viridimontanum can be separated from the morphologically similar individuals of A. aleuticum by the greater length of the stalks on the medial ultimate segments and of the false indusia, measuring greater than 0.9 mm and greater than 3.5 mm, respectively, in A. viridimontanum. Spore size is also a useful character (although not easily measured in the field); the average A. viridimontanum spore measures 51.4 μm in diameter.
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There are many thick, almost tuberous roots, emerging from a rootstock of 1–2 cm in diameter creeping at the soil surface. The shiny, somewhat fleshy green leaves have a short leaf stalk that may have spiderweb-like hairs at their base. The leaf blade varies between almost round, ovate, or longish, diamond or inverted egg- shaped, 2–13 cm long, 1–7½ cm wide, with the base gradually narrowing, rounded or hart-shaped, the margin entire to scalloped, with shallow irregular teeth, saw-shaped or almost lobed, the leaf tip pointy, blunt or rounded and the teeth may be ending in a soft spine. The upper leaf surface with few or may hairs or even hairy like a spiderweb, the lower leaf surface with densely felty beneath with spiderweb hairs.
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The new "Maestro" image processor used in the S2 was developed by Fujitsu based on the MilbeautFujitsu Microelectronics-Leica's Image Processing System Solution For High-End DSLR and the autofocus system (Leica's first to see production) was developed in house. The S2 series body, lenses and accessories were available in 2009.Retail data on S2 A series of new Leica lenses is manufactured specifically for the S2 and Leica claims they offer unsurpassed resolution and contrast at all apertures and focusing distances, even exceeding the sensor's capabilities. Lenses offered for the S2 include Summarit-S in normal (70 mm), wideangle (35 mm), and macro (120 mm) varieties, and Tele-Elmar (180 mm) portrait-length telephotos; these are available in versions that feature integrated multi-leaf blade shutters ("Central Shutter", or CS), in addition to the focal-plane shutter in the camera body, to enable higher flash sync speeds.
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The ivy-leaved pelargonium is a perennial plant that scrambles over the surrounding vegetation and its somewhat succulent, slender and smooth, 3–10 mm (0.12–0.40 in) thick stems can grow to a length of about 2 m (7 ft). The leaves are alternately arranged along the stem, but sometimes seem to be opposite. The leaves have broad oval to triangular stipules of about 7 mm (0.28 in) long and 4 mm (0.16 in) wide, a leaf stalk of ½–5½ cm (0.2–2.2 in) long, and a hairy or hairless, green to greyish green, sometimes with a differently colored semicircular band, more of less fleshy, circular to heart-shaped in outline, on average 3 cm (1.2 in) long and 5 cm (2.0 in) wide (full range 1–6¾ cm × 1¾–8¾ cm). The leaf blade has five shallow or deeper sharp or blunt tipped lobes that spread radially from a point with an entire margin.
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Proceedings of a seminar. Bangkok, RECOFTC. An Ulin tree discovered in 1993 in Kutai National Park, is one of the largest plants in Indonesia. It is an estimated 1,000 years old, and has increased its diameter from 2.41 to 2.47 metres in the 20 years since its discovery. Its height was however reduced from some 30 metres to only 20 after a lightning strike. Another at Sangkimah in the west of the park has a diameter of 2.25 metres and a height of some 45 metres. The trees' leaves are dark green, simple, leathery, elliptical to ovate, 14–18 cm long (5.5–7.5 inches) and 5–11 cm wide (2–4 inches), and are alternate, rarely whorled or opposite, without stipules and petiolate. The leaf blade is entire (unlobed or lobed in Sassafras) and occasionally with domatia (crevices or hollows serving as lodging for mites) in axils of main lateral veins (present in Cinnamomum).
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Kleinhovia hospita is an evergreen, bushy tree growing up to 20 m high, with a dense rounded crown and upright pink sprays of flowers and fruits. Leaves are simple and alternate; stipules are ensiform to linear, about 8 mm long; petioles are 2.5–30 cm long; the leaf-blade is ovate to heart-shaped, glabrous on both sides, with the apex pointed. Secondary veins occur in 6-8 pairs, palmately nerved. The flowers of K. hospita are terminal, in loose panicles protruding from the crown; flowers are about 5 mm wide, coloured pale pink; pedicels are 2–10 mm long; bracteoles are lanceolate, 2–4 mm long, pubescent; gynandrophores are 4–7 mm long, pubescent; there are 5 sepals, linear lanceolate, 6–8 mm long, pink, tomentose; 5 petals, inconspicuous, the upper one being yellow; 15 stamens, monaldelphous, 8–15 mm long, staminal tube broadly campanulate, adanate to gynandrophore, 5-lobed, each lobe having 3 anthers and alternating with staminodes; the anthers are sessile and extrorse; pistil occur with a 5-celled, pilose ovary, one style and a capitate, with a 5-lobed stigma.
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