作者

LIU, TANG-SHUI and YANG, KUOH-CHENG

型態特徵

Annual or perennial herbs, usually glabrous. Leaves alternate, rarely opposite, frequently pinnately or palmately compound; stipules absent. Flowers in racemes or cymes, zygomorphic, bisexual; sepals 2, petaloid, caducous; petals 4, in 2 whorls, outer and inner whorl very dissimilar, with or without spur; stamens 2, 4 or 6, filaments often alate and petaloid, free or connate below, nectariferous at base, anthers opening longitudinally, closely appressed to the style; ovary superior, bicarpellate, 1-loculed, placentation parietal; ovules 1 to numerous, campylotropous. Fruit a valved capsule or nut; seeds with minute embryo and mealy endosperm, cotyledon 1 or 2.

屬

About 17 genera with about 530 species, mainly in the temperate and subtropical regions of the northern hemisphere; two genera in Taiwan.

參考文獻

• LIU, TANG-SHUI and YANG, KUOH-CHENG, Flora of Taiwan, second edition 2: 726. 1996.  (Fl. Taiwan 2nd edit.)