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Oxalidaceae R. Brown

酢浆草科

Description from Flora of China

Herbs, annual or perennial, sometimes shrubs or trees. Stipules absent or small. Leaves alternate or whorled, basal or cauline, pinnate or palmate; leaflets often folded together at night, margin always entire. Inflorescences umbellate, cymose, or racemose, or flowers solitary. Flowers bisexual, regular, 5-merous, usually heteromorphic, heterostylous. Sepals 5, distinct or basally connate, imbricate, rarely valvate. Petals 5, sometimes basally slightly connate, convolute. Stamens 10, in 2 whorls of 5; outer whorl usually with shorter filaments, opposite petals; filaments connate near base; anthers 2-celled, with longitudinal slits. Ovary superior; carpels 5 and fused; placentation axile, each locule with (1 or)2 to several ovules; styles 5, distinct; stigmas capitate or shortly 2-cleft. Fruit a loculicidal capsule or a berry. Seeds often with basal aril involved in explosive ejection of seed from capsule; endosperm fleshy.

Huang Chengchiu, Huang Baoxian & Xu Langran. 1998. Oxalidaceae. In: Xu Langran & Huang Chengchiu, eds., Fl. Reipubl. Popularis Sin. 43(1): 3-17.

Six to eight genera and ca. 780 species: mostly in tropics and subtropics of both hemispheres but extending into temperate regions; three genera (one introduced) and 13 species (four introduced) in China.

(Authors: Liu Quanru (刘全儒); Mark F. Watson)

Lower Taxa


 

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