生活型

herb

形態特徵

• Culms tufted, without conspicous rhizome, 20-40-cm tall, angular, smooth, scabird below.
• Leaf blade linear, equal to slightly shorter than culm, flattish with weakly incurved margins, herbaceous, glabrous to sparingly pilose, smooth except on scabrid upper margins; sheaths 2-5 cm long, membranaceous ventral side dark stramineous, obliquely truncate at orifice; ligule a fringe of short hairs.
• Inflorescence simple to compound, 3-4 cm by 2.5-3 cm, loose; involucre bracts 3- 4, lowest leafy, subequal to corymb; primary branches 1-3, flattened, 2-4 cm long. Spikelets many per inflorescence, ovate to oblong-ovate, 5-10 mm by 2.2-2.5 mm, acute, terete, densely many-flowered, light rusty brown, weakly shiny.
• Glumes many per spikelet, broadly ovate, ca. 2 mm long, obtuse, membranaceous pale and tinged with rusty brown, 3-nerved with a lateral pair not reaching apex. Anthers ca. 0.3 mm long. Style flat, ciliate on upper margins, slightly dilated at base; stigmas 2. Achenes broadly obovate, ca. 1 mm long, biconvex, shortly stipitate, brownish, sparsely verruculose, finely cancellated with several rows of transversely oblong cells.

引證標本

specimen not seen.

參考文獻

• KOYAMA, Tetsuo, KUOH, Chang-Sheng & LEONG, Wai-Chao, Flora of Taiwan, second edition 5: 276. 2000.  (Fl. Taiwan 2nd edit.)