生活型

herb

形態特徵

• Annuals; culms weak, ascending and rooting at lower nodes.
• Ligule membranaceous, ca. 7 mm long, ciliated; leaves amplexicaudal, cordate at base.
• Inflorescence of weak 3-9 digitate racemes; rachis 2/3 as long as spikelet; pedicelate spikelet reduced to a 0.5 mm long pedicel. Sessile spikelets lanceolate, ca. 3.8 mm long, compressed; lower glume coriaceous, papillate, 5-7-nerved, nerves hispidulous, as long as spikelet; upper glume papery, margins membranaceous, 1-nerved, as long as lower glume; lower lemma lanceolate, palea wanting; upper floret awned, ca. 2.5 mm long, lemma hyaline, bifid at apex, awn ca. 0.7 mm long, arising from near base; palea hyaline, ca. 2 mm long.
• Caryopsis slender, ca. 1.8 mm long.

分布

• 台灣 : common grass.
• 世界 : The Caucasus, India, China and Japan.

引證標本

TAIPEI: Shihlin, Hsu 1395; Taipei, Hsu 215; Hsiaokotou, Hsu 6S25*. HSINCHU: Shimda 401B. MIAOLI: Dahkuann, Hsu 576. NANTOU: Sun Moon Lake, Hsu 1325. CHIAYI: Alishan, Sasaki s n. Oct 1928. TAITUNG: Chaopu, Hsu 1084; Lanyu Is., Sasaki s. n. 3 Jun 1926, Kuoh 2677; Lutao Is., Hsu 306.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 524. 2000.  (Fl. Taiwan 2nd edit.)