生活型

herb

形態特徵

• Annuals; culms branched, glabrous, 30-100 cm high.
• Blade 15-40 cm long, 7-20 mm wide; midrib stout, greenish white; ligule short, upper margin a ring of hairs; sheath cylindrical, glabrous and shining.
• Panical ca. 30 cm lkong, branches scabrous, 1-5 per node, arranged at 45o angle to central axis. Spikelets sparingly arranged, ovate-oblong to lanceolate-elliptic, acute, ca. 2.3 mm long, glabrous; lower glume broadly deltoid, obtuse or roumded, clasping vase of spikelet, 1/4-1/5 as long as spikelet; upper glume subequal to spikelet, 5-7-veined; lower lemma and upper lemma subequal, flat; upper lemma oblong, glabrous and shining, 5-veined, prominrnt when mature, tightly enclosing upper palea and caryopsis.

分布

• 台灣 : in villages at mid-elevation in the central part of the island.
• 世界 : Originally from America, naturalized in temperate countries.

引證標本

TAICHUNG: Kuanshan, Hsu & Kuoh 80129.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 490. 2000.  (Fl. Taiwan 2nd edit.)