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Friis, I (1991) Urticaceae FZ 9(6)
Annual or perennial herbs, shrubs or small trees, monoecious or dioecious, sometimes with stinging hairs. Stipules usually present. Leaves alternate or opposite, simple or lobed, usually strongly 3-veined from the base. Cystoliths generally present. Inflorescences usually cymose, densely clustered. Flowers minute, unisexual, with 1 whorl of tepals. Ovary superior with 1 erect basal ovule. Comment: In addition to Obetia and Girardinia in the Urticaceae, species of Tragia in the Euphorbiaceae have stinging hairs and sometimes nettle-like leaves. Worldwide: 48 genera and 1,050 species, tropical, with a few temperate. |
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| Genus | Content |
| Boehmeria Jacq. | Description, Image |
| Droguetia Gaudich. | Description, Image |
| Elatostema J. R. Forst. & G. Forst. | Description, Image |
| Girardinia Gaudich. | Description, Image |
| Laportea Gaudich. | Description, Image |
| Obetia Gaudich. | Description, Image |
| Pilea Lindl. | Description, Image |
| Pouzolzia Gaudich. | Description, Image |
| Procris Comm. ex Juss. | Description, Image |
| Urera Gaudich. | Description, Image |
| Urtica L. | Description, Image |
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