The perigon is blue or purple. The perigon is densely hairy on the outside and inside by crooked trichomes. The peduncle is hairy or bare. The bracteoles are linear to triangular and bare.
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Inflorescences are unisexual, while its fruit is ovate, approximately x , with a very short apex, largely included in the pubescent perigon.
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Urtica lalibertadensis is a species of the genus Urtica. It differs from U. leptostachya in its subscandent habit and the deflexed stinging hairs on the glabrous stem, and by the presence of numerous stinging hairs on the perigon of the female flowers (and fruits) and individual stinging hairs on the perigon of the male flower. It is a very abundant species in Peru.
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Iris histrio has been separated into two subspecies by Mathew (1989) as subsp. histrio and subsp. aintabensis because of variations in leaf, perigon tube and segment measurements. Iris histrio subsp.
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The perigon is blue or purple. The helmet is about as high as it is wide or less high. The nectar leaves have a curved stem. The spur is slightly bent back.
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The inflorescence is paniculate and simple or branched with a few side risps. The perigon is blue or purple. The helmet is usually wider than high. The tepals are bare on the outside.
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Urtica urentivelutina is a species of the genus Urtica. This species is closely related to U. macbridei, but differs in its much denser and longer indument, especially on the stipules (subglabrous in U. macbridei) and the presence of stinging hairs on the perigon of the female flowers. The leaves are densely pubescent and also irregularly bullate between the veins, which is a character not found in other Peruvian species.
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Diagram showing the parts of a mature flower. In this example the perianth is separated into a calyx (sepals) and corolla (petals) The perianth (perigonium, perigon or perigone) is the non-reproductive part of the flower, and structure that forms an envelope surrounding the sexual organs, consisting of the calyx (sepals) and the corolla (petals). The term perianth is derived from the Greek περί, peri, meaning around, and άνθος, anthos, meaning flower, while perigonium is derived from gonos, meaning seed, i.e. sexual organs.
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The floral parts are arranged at the end of a stem without any internodes. The receptacle (also called the floral axis, or thalamus) is generally very small. Some flower parts are solitary, while others may form a tight spiral, or whorl, around the flower stem. First, at the base, are those non-reproductive structures involved in protecting the flower when it is still a bud, the sepals, then are those parts that play a role in attracting pollinators and are typically coloured, the petals, which together with the sepals make up the perianth (perigon, perigonium).
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