作者

YANG, Yuen-Po

型態特徵

Annual or perennial dioecious or polygamous fresh or saltwater herbs. Leaves radical or cauline, alternate, opposite or whorled, linear, lanceolate, elliptic or cordate, sessile or petiolate; petioles usually sheathing. Axillary scales present, 2-numerous. Flowers actinomorphic, unisexual or bisexual, enclosed in a bifid spathe or within two opposite bracts. Spathes sessile or long pedicellate. Sepals 3, valvate, green; petals 3, sometimes reduced to 2, imbricate, colored, or absent. Stamens 3-many; anthers 2-celled, longitudinally dehiscent; filaments slender. Ovary inferior, apex sometimes beaked, 1- or incompletely many-celled, parietal placenta protruding nearly to the center of ovary; styles mostly united, stigmas entire or bifid; ovules numerous. Fruit linear or ovoid, irregularly dehiscent. Seeds numerous, filiform or ovate; testa glabrous or echinate; endosperm absent; embryo straight.

屬

Sixteen genera, about one hundred species, tropical and temperate; seven genera in Taiwan.

參考文獻

• YANG, Yuen-Po, Flora of Taiwan, second edition 5: 11. 2000.  (Fl. Taiwan 2nd edit.)