生活型

herb

形態特徵

• Annuals; culms prostrate, basal nodes branching and rooting, to 3 mm in diam., to 100 cm high.
• Blades linear-lanceolate, 4-15 cm long, 3-9 mm wide, margins thick; ligule membranaceous, obtuse, 1-3 mm long; sheath usually shorter than internodes, more or less tubercle hairy.
• Racemes 5-15 cm long, 3-10, digitately arranged; rachis ca. 1 mm wide, margins winged, green and serrulate, midrib white and ca. 1/3 as wide as rachis. Spikelets ca. 3 mm long, lanceolate, usually paired, one pedicellate and other sessile or shortly pediceled; pedicel compressed and margins serrate; lower glume minute, triangular, ca. 0.2 mm long, membranaceous; upper glume ca. 1/2-3/4 as long as spikelet, 3-veined, margins ciliated; lower lemma and upper lemma similar, nearly as long as the spikelet, 5-7-veined, median 3 veins far apart, glabrous, lateral one close and obscure, more or less ciliated along interveins and margins; upper florate cartilaginous, nearly as long as spikelet.

分布

• 台灣 : naturalized around villages and in waste places.
• 世界 : The temperate and warm regions of the world.

引證標本

TAIPEI: Chitsou, Hsu 90. TAICHUNG: Lishan, Kuoh 8089.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 470. 2000.  (Fl. Taiwan 2nd edit.)