形態特徵

• Rhizome short, subdensely tufted. Culms 20-40 cm tall, smooth.
• Leaves rather many, 4-6 mm wide, deep green; sheaths purplish brown.
• Spikes 4 to 7, erect, upper 2 or 3 subfastigiate, lower 2 to 4 spaced; terminal spike staminate or rarely bearing a few pistillate flowers at apex, linear, 2-6 cm long, brownish; lateral spikes pistillate, cylindrical, 3-6 cm long, 2.5-3 mm wide, densely many-flowered. Lower bracts short-sheathing, blades leafy, overtopping inflorescence.
• Pistillate glumes oblong, 2-5 mm long, obtuse to subtruncate at apex, pale. Utricles suberect to patent, ellipsoid to ovoidal, 2.5-3.2 mm long, obtusely trigonous, dark green to purplish, many-nerved, beak minutely bidentate. Achenes tightly enveloped, ovate, ca. 1.5 mm long, trigonous; style short, enlarged base; stigmas 3, short.

分布

• 台灣 : forest floor at 2,000-2,500 m.
• 世界 : China (Szechuan).

引證標本

ILAN: Mt. Taiheizan, Hayata & Sasaki s. n. 1917, Ohwi 2195; Pianan Anbu, Ohwi 2744. TAICHUNG: Wuling, Leong 883.

參考文獻

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