特徵描述
作者
YANG, YUEN-PO and LU, SHENG-YOU
型態特徵
Annual or perennial aquatic herbs with horizontal or vertical rhizomes. Leaves simple, alternate, long-petiolate, submersed and/or emergent, blades linear, sagittate, cordiform or orbicular. Flowers axillary, solitary on long peduncles, emergent, bisexual, actinomorphic, hypogynous to perigynous; sepals 4-6, green to petaloid; petals 0-numerous; stamens numerous, anthers elongate; ovary compoud, of 3-35 united or partially united carpels, multilocular; stigmas many, united into a disc with radiating rays; ovules numerous, usually anatropous, rarely orthotropous. Fruit a spongy berry, many-seeded; seeds ovoid to subovoid, operculate, mostly arillate; embryo small, with 2 thick, fleshy cotyledons; endosperm scanty.
屬
About six genera, cosmopolitan; three genera in Taiwan.
參考文獻
Nymphaea 睡蓮屬
作者
YANG, YUEN-PO and LU, SHENG-YOU
型態特徵
Perennial aquatic herbs with horizontal or erect stout rhizomes. Leaves mostly floating, orbicular, ovate, elliptic, cordiform or saggitate, margins entire, sinuate or dentate. Flowers white, yellow, pink, red, or blue, pedunculate; sepals mostly 4; petals many, perigynous; stamens numerous, outmost petaloid, anthers linear, introrsely dehiscent; ovary basally syncarpous, apocarpous to syncarpous above, with many carpels forming many locules, stigmas many, radiating; ovules many, anatropous. Fruit globose or ellipsoid, irregularly dehiscent under water; seeds with endosperm, numerous, ovoid, arillate.
參考文獻
- YANG, YUEN-PO and LU, SHENG-YOU, Flora of Taiwan, second edition 2: 611. 1996. (Fl. Taiwan 2nd edit.)
- Huang, T. C., SMC Publishing Inc. 162. 1994.
