特徵描述
作者
YING, Shao-Shun
型態特徵
Annual, biennal or perennial herbs; sometimes subshrubs or even shrubs, very rarely climbing; usually with a subterranean bulb, tuber, corm or rhizome, sometimes producing superterranean bulbils or rooting buds; stem present or absent; often erect or nearly so. Leaves simple, alternate or rarely verticillate to subopposite, membranaceous to chartaceous, or coriaceous or fleshy, some reduced to scales. Flowers mostly bisexual, rarely unisexual; actinomorphic to slightly zygomorphic, solitary, or in racemes, spikes panicles, umbels or subumbels; tepals mostly 6, rarely 4 or 8, free or connate at base and forming a tube, equal or more or less unequal. Stamens 6, rarely to 12 or fewer, hypogynous or adnate to and always opposite tepals; filaments free or variously connate; anthers 2-celled, oblong to linear, opening by a lengthwise slit or rarely by a terminal pore. Ovary usually superior, rarely half inferior, mostly 3-celled, rarely 1-celled or 4-celled; ovules numerous in each cell, biseriate, rarely 2, placentas parietal; style mostly 1, entire or more or less 3-fid. Fruit a berry or capsule; capsules loculicidal or septicidal; seeds solitary to numerous, endosperm abundant, fleshy or cartilaginous; embryo straight or curved.
屬
About 300 genera and more than 4,000 species worldwide, but abundant in temperate regions of both hemispheres; 21 genera in Taiwan.
參考文獻
Tricyrtis 油點草屬
作者
YING, Shao-Shun
型態特徵
Perennial herbs; rhizome elongate, creeping, sometimes with stolons; stem erect or ascending, branched upward, glabrous to pubescent. Leaves simple, alternate, sessile to petiolate, sometimes base cordate, glabrous to pubescent, margins entire, ciliate. Flowers somewhat showy, white to yellow, often red or reddish purple spots; solitary in racemes or corymbos, terminal to axillary; pedicel articulate or not, bracteate; perianth widely campanulate to funnel shaped; segments 6 in 2 series; outer tepals usually saccate at base; inner tepals flat or gibbous at base; stamens 6, attached at base of perianth; filaments cohering into a tube below, spreading above; anthers dorsifixed, extrorse; ovary cylindric, erect, 3-celled, ovules many per cell; style 3-fid; arms 2-fid. Fruit a capsule, linear to linear-cylindric, triquetrous, septicidal; seeds numerous, compressed, round, brown, reticulate. Basic chromosome number X = 13.
