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Leguminosae

豆科

特徵描述
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特徵描述

作者

HUANG, TSENG-CHIEN and OHASHI, HIROYOSHI

型態特徵

Herbs, shrubs, or trees. Leaves stipulate and usually alternate, pinnate or digitately compound, or simple, sometimes with the rachis ending in a tendril. Inflorescence variable, axillary, leaf-opposed or terminal, mostly pseudoracemose or panicled, bracts and bracteoles usually both present; flowers usually irregular, hermaphroditic, rarely regular or polygamous; sepals 4–5, connate or free, often unequal, sometimes combined into 2 lips; petals 5, rarely fewer by reduction, usually free and unequal; stamens normally 10, perigynous or hypogynous, rarely fewer or indefinite; filaments free or variously connate; anthers 2-celled, generally longitudinally dehiscent; ovary free; style simple, cylindrical, usually declinate, stigma capitate, terminal or oblique; ovules one or more on the ventral suture. Fruit usually a dry, dehiscent legume, typically dehiscent by one or both sutures into two valves, or indehiscent, sometimes jointed and separating into 1-seeded joints. Seeds usually exalbuminous; cotyledons foliaceous or amygdaloid, with a straight or inflexed acumbent radicle.

Genera about 650, species over 18,000, cosmopolitan. About 60 genera and 170 species in Taiwan.

參考文獻

Senna 黃槐屬

作者

HUANG, TSENG-CHIEN and OHASHI, HIROYOSHI

型態特徵

Trees, shrubs, herbs. Bracteoles 0. Androecium often zygomorphic, the members tending to decrease in size from the abaxial to the adaxial side of the flower. Filaments of all stamens straight, either shorter or not more than twice as long as their anther; if longer, then the anthers dehiscing by apical pores. Anther-thecae naked along the sutures. Pod either indehiscent, or breaking inelastically through one or both stures; if through both, then the valves not coiling. Seed-coat often with a closed areole on each face or margin.

參考文獻

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