生活型

herb

形態特徵

• Rhizome short, densely tufted. Culms many, 10-50 cm tall, smooth, bearing spikes on upper 1/2-3/5.
• Leaves many, 3-6 mm wide, sheaths short, dark brown.
• Spikes 4-8, all spaced or upper 2 or 3 contiguous; terminal spike staminate, linear, 1.5-3 cm long, greenish; lateral spikes pistillate, occasionally androgynous or gynaecandrous, single or binate, cylindrical, 1.5-4 cm long, 3-4 mm thick, densely many-flowered, light green to yellowish green, erect, peduncled. Lower bracts nearly as long as inflorescence, rather long-sheathing.
• Pistillate glumes oblong, ca. 3 mm long including awn; awns 0.7-1 mm long. Utricles suberect to erect-patent, ellipsoid to fusiform, trigonous, ca. 2.5 mm long, many-nerved, sparsely pubescent, contracted at both ends; beak short, minutely bidentate. Achenes rather tightly inclosed, ca. 1.5 mm long, trigonous, truncate at apex; style enlarged at base; stigmas 3, short.

分布

• 台灣 : in forest slope, 100-1,200 m, common.
• 世界 : Japan and the Ryukyus.

引證標本

TAIPEI: Taipei City, Leong 1809. ILAN: Kuanyin, Yang & Hsieh 5443. HSINCHU: Chingwashi, Kuoh 14391. MIAOLI: Huohyenshan, Kuoh 14391. TAICHUNG: Pachienshan, Lin 873. NANTOU: Luantashan, Kawakami & Mori s. n. 1911. KAOHSIUNG: Nantzihsienhsi, Kuoh 10235. PINGTUNG: Nanjenshan, Kuoh 15603. TAITUNG: Tulanshan, Wu 24093; Lanyu Is., Yang & Yen 8190. HUALIEN: Shanfeng, Lu et al. 1323

參考文獻

• KOYAMA, Tetsuo, KUOH, Chang-Sheng & LEONG, Wai-Chao, Flora of Taiwan, second edition 5: 233. 2000.  (Fl. Taiwan 2nd edit.)