生活型

herb

形態特徵

• Annuals; culm ascending, 10-30 cm above creeping base, nodes hairy, 1.2-2.5 mm in diam.
• Blades hispid, 1-9 cm long, 4-12 mm wide, cordate and ciliate on undulate margins at base; sheaths ciliate on margins, shorter than internode; ligule ca. 1 mm long.
• Inflorescence of racemose racemes, racemes 3-15, usually alternate on main axis, 0.5-3 cm long; rachis usually scabrid and pilose; pedicel with a few weak long hairs. Spikelets paired, ovate, pale, crowded on one side of rachis, turgid, ca. 2 mm long, 1 mm wide, glabrous; lower glume minute, 1/4-1/5 as long as spikelet, membranaceous, truncate or rounded, veinless or obscurely 1-veined; upper glume ovate, acute, 5-7-veined; lower lemma 5-veined, paleate, palea oblong, acute, nearly as long as spikelet; upper lemma obovate, apiculate, minutely rugose; anther ca. 0.8 mm long.

分布

• 台灣 : weedy in cultivated fields and waste places.
• 世界 : Tropic regions.

引證標本

NANTOU: Chiali, Mori 243. YUNLIN: Taiow, Ashikaga 2536. CHIAYI: Suantou, Yasukaw s. n. TAINAN: Tainan, Hsu 6467. PINGTUNG: Hengchun, Hsu 504; Oluanpi, Hsu s. n. TAITUNG: Lutao Is., Hsu 301.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 458. 2000.  (Fl. Taiwan 2nd edit.)