生活型

herb

形態特徵

• Tufted with short slender rhizome. Culms slender to filiform, erect, 15-40 cm tall, remotely 3- or 4-nodose.
• Leaves shorter than culm, slender, 1-2 mm wide, sheaths straw-brown, basal sheaths becoming bladeless.
• Corymbs 1-3, spaced, somewhat turbinate in outline, 5-15 mm long, bearing few short branches, congested; terminal corymb larger than lateral ones, subtended by a setaceous bract; lateral ones on an exserted filiform peduncle. Spikelets fascicled in a group of 2-5, sessile or short-pedicelate, body oblong-elliptic, acute at both ends, subterete, 4-5 mm long, 2-flowered, 1-fruited.
• Glumes ovatelanceolate, membranaceous, mucronate, snow white in beginning, turning ferrugineous-white. Achenes oblong-obovate to obovate, lenticular, 1.5 mm long, light straw-colored, smoothish to obscurely wrinkled; style-base conical-subulate, almost length of achene, style filiform, deeply 2-cleft. Hypogynous bristles usually 9-3, surpassing achene, retrorsely scabrous, sparsely hispid at base. Stamens 2.

分布

• 台灣 : Wet places and high moor.
• 世界 : Distribution circum-boreal, but disjunctly noted in Florida, West Indies, and northern Brazil. In eastern Asia as far south as to Kyushu, and disjunct to Taiwan.

引證標本

HSINCHU: Yuanyang Lake, Huang 5480.

參考文獻

• KOYAMA, Tetsuo, KUOH, Chang-Sheng & LEONG, Wai-Chao, Flora of Taiwan, second edition 5: 296. 2000.  (Fl. Taiwan 2nd edit.)