Eleocharis tetraquetra
四角藺
Eleocharis tetraquetra Nees ex Wight
名彙資訊
特徵描述
典藏標本
數位照片
分布位置
相關資訊
名彙資訊
學名發表文獻
Wight, Contributions to the Botany of India 113. 1834. (Contr. Bot. India)
台灣首次記錄發表文獻
Koyama, Flora of Taiwan 5: 222. 1978. (Fl. Taiwan, 台灣植物誌)
異名
無
各語言俗名
-
日ましかくい.
參考文獻
-
Yang, A list of plants in Taiwan . 1982. (List Pl. Taiwan, 台灣植物名彙)
特徵描述
生活型
herb
形態特徵
- Rhizomes short, often with slender short stolons clothed with pale scales. Culms tufted, 40-70 cm tall, 1.5-2.5 mm wide, acutely 4- (sometimes 5-) angled, deep green, not soft, surrounded at base with few sheaths.
- Sheaths rather thickly membranaceous, uppermost one 6-15 cm long, pale-brownish and often tinged with brownish red toward base, orifice truncate with mucronulate tip.
- Spikelet somewhat oblique, oblong or lanceolate, 8-20 mm long, 3-5 mm thick, acute at apex, subterete, light olive-brown.
- Glumes oblong, 3-4 mm long, obtuse, chartaceous, rusty-brown, greenish costa ending below tip of glume. Achenes obovate, flattened, trigonous, 1.5-2 mm long, greenish brownish, nearly smooth on sides, short-stipitate at base; style 2.5-3 mm long, 3-cleft, base deltoid, spongy, 1.2-1.7 mm long and 2/3-4/5 width of achene body. Hypogynous bristles 6, slightly longer than to twice as long as achene body, flattened, retrorsely scabrous with rather long spinules.
分布
- 台灣 : Uncommon in wet soil and rice fields
- 世界 : Tropical and subtropical Asia and Oceania: from India eastwards to northern Australia, and northeastwards to central Japan.
引證標本
TAIPEI: Peitou, Murakami 431. HSINCHU: Ryutan, Shimada 2844.
參考文獻
典藏標本
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