作者

KOYAMA, Tetsuo and BOUFFORD, David E.

型態特徵

Perennial herbs. Rhizome knotty or tuberous. Stems erect or decumbent-ascending, nodes severalnoded, branching, occasionally plants stemless. Leaves more or less 2-ranked, radical and cauline; blades broad or narrow, pinnately nerved, costa and fine parallel side veins prominent, narrowed to conspicuous petiole. Inflorescences spike-like or head-like clusters of rather small flowers, subtended by spathe-like bracts. Flowers solitary or few together, irregular and asymmetical; sepals 3, free, equal or subequal; petals 3, unequal, usually connate forming a tube toward base, upper petal large than lower two; staminodes 5 or 6, 1 bearing a 1-celled anther, petaloid and constituting the showy part of the flower, rarely outer staminodes wanting; style 1, adnate below to tubular portion of staminodia; ovary inferior. Fruit a capsule or berry.

屬

About 550 species in 31 genera in the tropics of both hemispheres with the center of differentiation in the neotropics; a single genus in Taiwan.

參考文獻

• KOYAMA, Tetsuo and BOUFFORD, David E., Flora of Taiwan, second edition 5: 727. 2000.  (Fl. Taiwan 2nd edit.)