作者

YANG, YUEN-PO and LU, SHENG-YOU

型態特徵

Aquatic perennial herbs; rhizomes slender, elongate, branching, with gelatinous sheath. Leaves simple, alternate, petiolate, submersed or floating, dimorphic, floating blades elliptic, peltate, margings entire, submersed blades finely palmately dissected. Flowers bisexual, actinomorphic, typically emergent, solitary, axillary, pedunculate; sepals 3, petaloid; petals 3; stamens 3-many; carpels 2–18, apocarpous, 1-locular, stigma nearly sessile; ovules 2–3, parietal, anatropous. Fruit aggregate with leathery pericarp, indehiscent, 1–3-seeded; seeds with endosperm.

屬

Two genera with about six species, widely distributed. Two genus in Taiwan.

參考文獻