特徵描述
作者
HSIEH, Chang-Fu
型態特徵
Perennial herbs, climbing or erect, or shrublets with rhizomes or tubers. Leaves distichous, opposite or verticillate, sometimes alternate, with three to many prominent nerves and close transverse parallel veinlets. Flowers axillary, solitary or in several-flowered inflorescences, bisexual, actinomorphic. Perianth petaloid, segments 4 and biseriate, or 5, sometimes basally united. Stamens 4 or 5, nearly hypogyous; filaments free or basally connate into a ring; anthers basifixed or dorsifixed, 2-celled, introrse, cells longitudinally dehiscent. Ovary superior to semi-inferior, 1-celled; stigmas 1-3, terminal, sessile; ovules 2-numerous, basal or apical and pendulous, anatropous or orthotropous. Fruit a 2-valved, sometimes berry-like, capsule; seeds with copious albuminous endosperm.
屬
Four genera in Indomalesia, eastern Asia, northern Australia and southeastern North America. One genus in Taiwan.
參考文獻
Stemona 百部屬
作者
HSIEH, Chang-Fu
型態特徵
Herbs with fleshy tubers. Stems elongate, twining. Leaves alternate, opposite or whorled, 3-9-nerved and with many transverse close veinlets, ovate-cordate. Flowers bisexual, solitary or few, subracemose. Perianth segments 4, free, acuminate, many nerved. Stamens 4, inserted at base of perianth; filaments very short, connate at base into a ring; anthers linear, connective prolonged as in a very long erect linear appendage. Ovary superior, 1-celled; stigma small, sessile. Capsules ovoid or oblong, compressed, opening by two valves; seeds longitudinally ribbed, beaked.
