Eleocharis 荸薺屬
作者
KOYAMA, Tetsuo, KUOH, Chang-Sheng & LEONG, Wai-Chao
型態特徵
Perennial or annual herbs, grass-like or rush-like, rarely with elongated woody caudices. Culms generally trigonous and solid. Leaves radical and/or cauline; blade linear or lanceolate-elliptic, sheathing at base, occasionally reduced to nearly bladeless sheaths; ligules present or absent; abaxial side of leaf sheaths sometimes projected beyond sheath orifice forming a tongue-like appendage (contraligule). Inflorescences various, mostly corymbose, paniculate, spicate, racemose or heads, subtended by leafy bracts, bearing 1 to numerous spikelets. Spikelets with few to many glumes; glumes imbricate or 2-ranked on a simple axis (rachilla); all or some glumes bearing an axillary flower or at times a bisexual cymule in axil, or rarely rachilla determinate with a single terminal pistillate flower and spikelet bearing 0-few small staminate partial spikelets in axils of some glumes. Flowers hermaphroditic or unisexual, without perianth or perianth of 3-many bristles or scaly segments. Stamens generally 1-3. Pistil bi- or tri-carpellate; styles 2- or 3-(rarely to 8-) fid at apex; ovary unilocular, with a single anatropous ovule; fruit an achene.
屬
A family of more than 5,000 species in 70-120 genera, distributed throughout the world under all ecological conditions, with the highest generic concentration in tropical South America. The family is divided into five tribes: Cariceae, Cypereae, Mapanieae, Rhynchosporeae and Sclerieae.
參考文獻
Eleocharis 荸薺屬
作者
KOYAMA, Tetsuo, KUOH, Chang-Sheng & LEONG, Wai-Chao
型態特徵
Annuals or perennials, often with elongated slender stolons. Culms naked at base with bladeless sheaths only, i.e., all leaves reduced to basal sheaths. Inflorescence a single spikelet, with a scale-like bract at base. Spikelet solitary, terminal, ovoidal, ellipsoid, cylindrical, or occasionally; subglobose, densely many-flowered; glumes imbricated, all similar in shape, bearing a bisexual flower in axil. Flowers with 4 to 6 hypogynous bristles; pistil jointed between ovary and spongy-thickened style-base; achenes lenticular or triangular; stigmas 2 or 3.
Type species. Eleocharis capitata R. Br. About 120 species in all the world. The following eight species have thus far been recorded from Taiwan.
種列表
- Eleocharis acicularis 牛毛顫
- Eleocharis acutangula 桃園藺
- Eleocharis atropurpurea 黑果藺
- Eleocharis congesta ssp. japonica 針藺
- Eleocharis dulcis 荸薺
- Eleocharis dulcis var. tuberosa 甜荸薺
- Eleocharis equisetina 木賊荸薺
- Eleocharis geniculata 彎形藺
- Eleocharis ochrostachys 日月潭藺
- Eleocharis parvula 矮稈荸薺
- Eleocharis retroflexa 貝殼葉荸薺
- Eleocharis sp.
- Eleocharis tetraquetra 四角藺
- Eleocharis variegata var. laxiflora
