生活型

herb

形態特徵

• Annuals, or biennials. Culms ascending, 17-26 cm high, 1.5 mm wide.
• leaf blade linear, 4-15 cm long, 2-3 mm wide, obtuse-acute or acuminate at apex. Sheath not compressed. Ligule membranaceous, collar shaped,1.5-2 mm long.
• Inflorescence an open panicle, 3-7 cm long. Spikelet with 3 or 4 florets, elliptic or oblong or ovate, 4 mm long, 1.5-2.5 mm wide. Pedicels glabrous.
• Lower glumes chartaceous, lanceolate to ovate, 1-2 mm long, 1-nerved. Upper glumes chartaceous, elliptic to ovate, acute-obtuse at apex, 1.5-2 mm long, 3-nerved. Lemmas membranaceous, ovate to elliptic, 2.5-3 mm long, 5-nerved, villous on nerves. Paleas narrowly lanceolate, apex blunt to acute, 2-2.5 mm long, 2-nerved, villous on nerves. Callus not webed. Anthers 1 mm long. Caryopsis ellipsoid, 1-1.5 mm long, apex villous.

物候

It flowers all the year round.

分布

• 台灣 : This is one of the most common grass growing gregariously in yard and wild field.
• 世界 : Cosmopolitan in distribution.

引證標本

TAIPEI: Pali, Lee s. n. 14 Apr 1968; Shihmen, Lin 720; Yangmingshan, Hsu 48. TAOYUAN: Yangmei, Kuo 6591. TAICHUNG: Lishan, Ho 305. NANTOU: Hohuanshan, Lin s. n. 1970; Mt. Fenghuangshan, Hsu 6222. HUALIEN: along the Suhua highway, Kuoh 2639; Tayuling, Peng 9157. ILAN: Chilan, Wang 1068.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 386. 2000.  (Fl. Taiwan 2nd edit.)