生活型

herb

形態特徵

• Perennial. Rhizome short creeping, woody. Culms robust, loosely tufted, erect to scrambling on bushes, 80-200 cm tall, 4-8 mm thick, scabrous on angles.
• Leaves in middle part of culms clustered in pseudo-whorls of 3-5, rather many, 4-20 mm wide, herbaceous to slightly coriaceous, glabrous, scabrous on margins and alone costas, gradually narrowed into a very long apex; sheaths trigonous, densely overlapping, narrowly to broadly winged, scabrous on angles; contraligule dark brown, round to somewhat depressed, densely ciliate on margin.
• Inflorescence consisting of 3-5 dense compound panicles, 20-50 cm long; panicles single or binate, peduncles spreading, exserted, scabrous; lowest bracts slightly longer than inflorescence. Spikelets unisexual, single or in clusters of 2-3; pistillate spikelets ovoid, 3.5-4 mm long. Staminate spikes lanceolate, 3.5-4 mm long; stamens 3.
• Achene ovoid to broadly ovoid, terete, 2-3 mm long, white to slightly grayish, shining, smooth to scrobiculate, umbonulate, sparsely puberulent; hypogynium 3-lobed, thick, deltoid, obtuse or dentate at apex.

分布

• 台灣 : in forest and thickets in south.
• 世界 : Southeastern Asia.

引證標本

Taitung: Lanyu Is., T. A. Y. Yang et al. 11850, Leong 1939.

參考文獻

• KOYAMA, Tetsuo, KUOH, Chang-Sheng & LEONG, Wai-Chao, Flora of Taiwan, second edition 5: 312. 2000.  (Fl. Taiwan 2nd edit.)