生活型

herb

形態特徵

• Perennials, branching intra-and /or extra-vaginally at base, rarely with a short rhizome or very short stolons. Culms erect or geniculate at base and rooting at decumbent nodes, to 85(-150) cm long.
• Sheaths smooth; uppermost ligules more or less quadrangular to acute-oblong to triangular, to 7 mm long, apex truncate to acute, erose or fimbriate; blades erecto-patent to erect, involute or flat, to 25 cm long, 6.5 mm wide, smooth to scabrous. Blades to 2 mm wide, smooth to slightly scaberulous.
• Panicle contracted to effuse, to 30 cm long; branches smooth to scabrous, lowermost 1-1 together, longest one 2-11 cm long, usually many-spikeled, naked in lower part. Spikelets 1.5-4.1(-4.4) mm long. Glumes unequal, lower glume longest, ovate-oblong to lanceolate. rachilla process absent. Panicle contracted to effuse, branches more or less smooth, lowermost longest to 8 cm long. Spikelets 1.85-2.85 mm long. Lemma 1.5-1.8(-2.15) mm long, Trichodium-net well-developed; callus hairs absent to 0.25 mm long; awn absent. Palea 0.15-0.35 mm long, 0.1-0.17 times as long as lemma.
• Lemma 1.2-3.25 mm long, 0.6-0.8(-0.97) times as long as lower glume, acutish to truncate and erose, more or less 5-nerved, Trichodium-net developed to absent; callus oblique, small, hairs 0.3 mm long; awn absent or present, then inserted at 0.3-o.8th of lemma, to 5 mm long. Palea 0.1-2 mm long, 0.1-0.75 times as long as lemma. Anthers (0.4-)1.4(-1.55) mm long, 0.36-0.73(-0.8) times as long as lemma, yellow to purple. Anthers 0.5-1 mm long, 0.25-0.57 times as long as lemma.

分布

• 世界 : The Malesian region.

引證標本

ILAN: Nanhutashan, Hsu 5945. HSINCHU: Tapachienshan, Hsu 12143. TAICHUNG: Hsuehshan, Mori s. n. 20 Oct 1936. NANTOU: en route Kuangkao to Patungkuan, Kuoh 14485; Songsuehlou, Chen 15867; Hohuanshan, Chen 16221. CHIAYI: Alishan, Yamamoto et al. s. n. 6 Nov 1938; Yushanchienhon, Chen 11421. HUALIEN: Tayuling, Kuoh et al. 7040.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 339. 2000.  (Fl. Taiwan 2nd edit.)