生活型

herb

形態特徵

• Perennial, tufted with short rhizome clothed with brown fibers, not stoloniferous. Culms slender, erect, 10-32 cm tall, triquetrous, smooth.
• Leaves few to a culm, shorter than culm; blades narrowly linear, 2-4 mm wide, subrigid, flattish plicate; sheaths pale-brownish.
• Inflorescence a head with 1-3 spikes, 1-1.2 cm long, ca. 1 cm wide, whitish green; central spike cylindrical 1-1.2 cm wide, 4-5 mm wide; lateral spikes elliptic, much shorter than central spike, each densely bearing many spikelets; leafy bracts 3 to 5, reflexed, lowest to 10 cm long. Spikelets patent, elliptic to ovate-elliptic, flattened, 2-2.5 mm long, 1-1.3 mm wide, 1- or 2-flowered, 1-fruited.
• glumes broadly ovate, membranaceous, folded with green keel, apiculate at apex, lower two ca. 2 mm long, 9- or 11-nerved, upper two 2.5 mm long, 5- or 7-nerved. Achenes elliptic-obovate or obovate-oval, laterally flattened, maturing dark brown; stigmas 2. Stamens 2.

分布

• 台灣 : Open grasslands.
• 世界 : Tropical Asia from India and Sri Lanka to Malesia, as well as through southern China and the southern Ryukyus.

引證標本

TAIPEI: Peitou, Hayata s. n. TAITUNG: Lanyu Is., Kuoh 4898.

引用文獻

• KOYAMA, Tetsuo, KUOH, Chang-Sheng & LEONG, Wai-Chao, Flora of Taiwan, second edition 5: 286. 2000.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)