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Urticaceae

蕁麻科

APG 4
Flora of Taiwan
特徵描述
屬列表
Boehmeria 苧麻屬
Chamabainia 蟲蟻麻屬
Cypholophus 瘤冠麻屬
Debregeasia 水麻屬
Dendrocnide 咬人狗屬
Droguetia 單蕊麻屬
Elatostema 樓梯草屬
Girardinia 蠍子草屬
Gonostegia 石薯屬
Laportea 桑葉麻屬
Lecanthus 盤花麻屬
Leucosyke 四脈麻屬
Maoutia 水絲麻屬
Nanocnide 花點草屬
Oreocnide 紫麻屬
Pellionia 赤車使者屬
Pilea 冷水麻屬
Pipturus 落尾麻屬
Pouzolzia 霧水葛屬
Procris 烏來麻屬
Urtica 蕁麻屬
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特徵描述

作者

YANG, YUEN-PO, SHIH, BING-LING and LIU, HO-YIH

型態特徵

Monoecious, dioecious or rarely polygamous herbs, shrubs, or trees, with or without stinging hairs; cystoliths usually present in epidermal cells. Leaves alternate or opposite, sometimes anisophyllous with nanophylls (reduced leaves), petiolate or sessile, usually stipulate. Inflorescences often cymose glomerules, or sessile and condensed cymes in leaf axils, sometimes a head or a single flower. Flowers minute, unisexual or rarely bisexual, actinomorphic or zygomorphic, mostly green; perianth a single whorl or rarely absent. Male flowers: perianth segments 2-5, mostly free or connate in lower half; stamens 2-5, inflexed in bud, anthers basifixed, longitudinally dehiscent, rudimentary ovary often present. Female flowers: perianth segments 2-5, free or somewhat completely connate; staminodes present or absent; ovary superior, 1-loculed, stigma capitate, penicillate, ligulate or filiform; ovule 1, basal. Fruit an achene or drupe, sometimes enclosed by persistent perianth; seed with thin testa; embryo straight, surrounded by oily endosperm.

About 45 genera with about 1,000 species, widely distributed in the tropical and temperate regions; 21 genera in Taiwan.

參考文獻

作者

型態特徵

參考文獻

種列表

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學名 中名 標本數