生活型

herb

形態特徵

• Perennials, mat-forming. Culms rambling, weak, 25-60 cm long, rooting from the lower nodes. Nodes glabrous.
• Sheaths glabrous, outer margin glabrous or hairy, oral hairs scanty or absent. Ligule a glabrous membrane, 0.5-0.8 mm long. Blades lanceolate, 5-16 cm by 2-10 mm, flaccid, base attenuate to slightly rounded, pseudopetiole absent, margins scaberulous, apex acute to acuminate, glabrous or sparsely puberulous on both sides, without tubercle-based hairs. Panicle 4-10 cm long, common axis 0.5-1 cm long.
• Racemes 4-11, digitate, ascending, straight, 4-9 cm long. Rhachis fragile, flattened, margins glabrous, internodes linear, 2.5-3.5 mm long. Sessile spikelets without a short stalk, deciduous with the adjacent joint and pedicel, oblong to lanceolate, 2.5-3 mm long, callus glabrous or puberulous. Lower glume oblong, coriaceous, midrib glabrous, dorsally longitudinally grooved, smooth, glabrous, margins glabrous, apex obtuse, entire. Upper glume elliptic, back acute, glabrous, midrib ciliate, apex entire, attenuate, mucro c. 0.5 mm long. Lower florets absent. Upper lemma oblong, 0.5-1 mm long, without veins, glabrous, apex entire, awn flexuous, column absent, 10-15 mm long. Upper palea ovate, 0.5-1 mm long, as long as the lemma, membranous, apex entire. Anthers 3, 0.7-1 mm long.
• Pedicels linear, flattened, 2-2.5 mm long, margins glabrous. Pedicelled spikelets subequal to the sessile ones.

分布

• 台灣 : Thickets, ravines, old clearings, up to 1,500m alt.
• 世界 : SW Ryukyus (Iriomote-jima and Yonaguni-jima), China (Hainan), Malesia, Philippines (Luzon, Mindanao, Mindoro, Samar) to Melanesia, Micronesia, Polynesia.

引證標本

TAIPEI: Hsienchiyen, Hsu 244 (TAI); Wuku, Sasaki s.n. Nov. 12, 1933 (TAI); Hsienkungmiao, Kuo 2391 (TAI). HSINCHU: Suzuki s.n. Dec. 10, 1936 (TAI). NANTOU: Hsitou, Huang s.n. Oct. 28, 1958 (TAI); Chen 5639 (TAIE); Tili, Chen 5737 (TAIE). CHIAYI: Alishan, Kuoh 15948 (NCKU). TAINAN: Paiho, Wang s.n. Nov. 22, 1970 (TAI); Kuantzuling, Chen 5741 (TAIE); Yuching, Kuoh 12787 (NCKU); Hsinhua, Kuoh 10957 (NCKU). PINGTUNG: Hengchun, Hsu 13014 (TAI); Wutai, Huang 80 (TNM); Shenchihshan, Huang 75 (TNM); Yichangshan, Huang 62 (TNM); Machia, Ku 164 (PPI). TAITUNG: Sasaki s.n. Oct. 15, 1915 (TAI); Tulanshan, Wu 17-033 (TNM).

參考文獻

• Chih-Hui Chen, Jan Frits Veldkamp and Chang-Sheng Kuoh, Taiwania 56(2): 111-117. .