生活型

herb

形態特徵

• Annuals; culms tufted, erect or ascending, 30-60 cm high.
• Sheaths loose, keeled, usually shorter than internode; ligule membranaceous, ca. 2 mm long; blade 2-10 cm long, 2-5 mm wide, leaf-base rounded.
• Racemes 2-5, 1-20 cm long, digitately arranged; rachis 0.8-1.2 mm wide, indurate, margins scabrous, green; midrib white, narrow, each node with 2-3 spikelets. Spikelets elliptic, 1.5-2.3 mm long, greyish green or purplish; lower glume minute or absent, translucently membranaceous, veinless; upper glume equaling spikelet or slightly shorter, narrow, 3-veined, interveins and margins coverd with soft clavate hairs; lower lemma 5-veined, interveins and margins also clavate hairs; upper floret coriaceous, blackish brown when mature, equaling spikelet.
• Caryopsis ca. 1.2 mm long.

分布

• 台灣 : in open waste places of the northeastern part.
• 世界 : The temperate regions of the world.

引證標本

TAIPEI: Chinshan, Hsu 1300.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 467. 2000.  (Fl. Taiwan 2nd edit.)