生活型

herb

形態特徵

• Perennial herb, rhizome short, ca. 10-20 mm long and ca. 3-4 mm diameter, with scale-like leaves.
• Leave simple, lorate, gladiate or long lanceolate, drooping at apex, ca. 3-4 in cespitose, enclosed by sheath; blades ca. 42-49 cm long, ca. 3.5-4 cm wide, acuminate at apex, cuneate at base, with decurrent wing, glabrous on the surface, tomentose at lower surface; vein parallel, midrib downward at adaxial and flanged at lower surface; lateral vein 2, veinlets ca. 48-54, flanged on both surfaces.
• Culm of inflorescence shorter than or as long as the leaf, ca. 32-51 cm tall, ca. 1-2 mm thick, trigonous; inflorescence with 3-4 panicles, panicle triangle, ca. 3 cm long, ca. 3 cm wide, with a utriculiform bracteole (cladoprophyll) at base; utriculiform bracteole ca. 3-4 cm long, ca. 0.3-0.5 cm wide, linear-oblanceolate, acute at apex; spikelet ca. 6-8 mm long, with triangular bracts at base, ca. 2 mm long, 1 mm wide; staminate a few, less than pistillate, linear-lanceolate; pistillate ca. 2-7, ovate, glume linear with 2 vein, yellowish-brown at margin; stigma 3, scabrous at surface; ovule solitary.
• Utricle ovate, ca. 3-3.5 mm long, 1.5 mm wide; ventral side nerveless, dorsal side ribbed with 1 keel, each side with 1 coarse vein, and 1-2 fine nerves; body ca. 2 mm, tapering gradually to beak; beak ca. 1.5 mm, bidenticulate at apex. Fruit a trigonous achene, ca. 2 mm long, ca. 1.5 mm wide.

分布

• 世界 : Guangdong, China.

引證標本

C. F. Chen 878, 13 November, 2004, 120° 45’ 11” E, 22° 23’ 23” N, Taitung, Tawu forest trail (HAST, PPI); C. F. Chen 1237 (18 February, 2005) (PPI), C. F. Chen 1286 (12 March, 2005) (PPI).

參考文獻

• Sheng-Zehn Yang and Chien-Fan Chen. 2005. Taiwania 50(3): 227.