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
Hemerocallis 萱草屬
作者
YING, Shao-Shun
型態特徵
Perennial herbs. Rhizome short. Roots often tuberous or nearly so. Leaves radical, linear to lanceolate, distichous, somewhat fleshy. Flowers showy, orange, yellow or purplish red, funnel-shaped, widely opening. Inflorescence a corymb or corymbose raceme, arising from leaf cluster, ascending, leafy or not, pedicel, glabrous articulate or not; tepals 6, forming a tube at base, lobes somewhat longer than tube, spreading, inner tepals often wider than outer ones, usually with reticulate venation; stamens 6, inserted in throat; filaments slender, glabrous; anthers filiform, yellow to golden yellow; ovary oblong to ovoid, sometimes obovoid, 3-celled; style slender, glabrous or hairy; stigma capitate. Fruit a capsule, loculicidal, 3-angled, transversely rugulose, 3-valved; seeds black, globose, shining. Basic chromosome number X=11.
