找植物
找標本
電子書

Menispermaceae

防己科

特徵描述
屬列表
標本列表

特徵描述

作者

HUANG, SHING-FAN and HUANG, TSENG-CHIENG

型態特徵

Climbing or twining, rarely erect, woody or suffruticose, dioecious plants. Leaves alternate, usually palmately veined and often lobed; stipules absent. Flowers small, usually in axillary racemes, sometimes panicles, solitary cymes or discoid heads, regular or rarely slightly irregular, 3-bracteolate; sepals usually 6, in 2 whorls, imbricate, outer whorl often smaller; petals 6, usually smaller than sepals, sometimes wanting, free or connate. Male flowers: stamens 3-12, free or connate, 2-celled; rudimentary carpels small or absent. Female flowers: staminodes 6 or absent; carpels usually 3, rarely 1 or 6 or more, free, sessile or stipitate; style terminal, simple or divided; ovule solitary, usually amphitropous. Ripe carpels drupaceous, usually strongly curved, stipitate or sessile, endocarp usually sculptured, bony or chartaceous. Seeds usually hook-shaped or reniform, often curved; endosperm smooth or ruminate or absent; embryo usually curved, cotyledons flat or semiterete.

About 63 genera and over 200 species, chiefly in the tropics; six genera in Taiwan.

參考文獻

Sinomenium 漢防己屬

作者

HUANG, SHING-FAN and HUANG, TSENG-CHIENG

型態特徵

Chimbing shrubs. Leaves deciduous, petiolate; blades ovate to subcordate, palmately 5- to 7-nerved. Flowers dioecious, in axillary panicles; sepals 6; petals 6; stamens 9-12; staminodes 9 in pistillate flowers; carpels 3; style recurved, stigma lobulate. Fruit a flattened drupe, concave.

參考文獻

標本列表