生活型

herb

形態特徵

• Culms to 15 cm tall, ascending to erect, intrasheath branching; nodes articulate, pubescent, lower nodes rooting; internodes glabrous.
• Sheath shorter than internode, pubescent; ligule membranous; blade ovate, to 3.5 × 1 cm, base rounded.
• Inflorescence 1-3 spike-like racemes, 1-2 cm long, digitately arranged. Sessile spikelet with 2 florets, upper one fertile. Lower glume lanceolate, ca. 4.5 mm long, membranous, scabrous, 5-veined, apex acuminate or bifid; upper glume lanceolate, ca. 4.5 mm long, keeled, scabrous, veinless, apex acuminate. Rachilla ciliate; lower lemma lanceolate, ca. 2 mm long, hyaline; upper lemma lanceolate, ca. 1.5 mm long, hyaline, veinless, with one awn rising from sub-base of upper lemma, awn ca. 9 × as long as upper lemma, columnar; column ca. 3 × as long as upper lemma; apex of awn scabrous. Pedicel compressed, longer or shorter than pedicellate spikelet, margin ciliate. Pedicellate spikelet sterile, with one sterile floret. Lower glume lanceolate to ovate, boat-shaped, ca. 3 mm long , 5-veined, apex acuminate; upper glume lanceolate, boat-shaped, ca. 2.5 mm long, 3-veined, apex acuminate; lemma ovate, ca. 1.5 mm long, hyaline, 1-veined to veinless, apex acute or bifid.

分布

• 世界 : southern China, southeastern Asia, southern Asia, Arabia, and eastern Africa.

引證標本

Chiayi Hsien, Alishan Hsiang, between Sher-Drow and Sher-Ze-Lu, along Taiwan Highway No. 18, Oct. 10, 2005, M.-J. Jung x101002 (NCKU), 65 km marker on Taiwan Highway No. 18, Oct. 28, 2000, W.-C. Leong 2116 (HAST).

參考文獻

• Ming-Jer Jung, Gwo-Ing Liao and Chang-Sheng Kuoh, Taiwania 51(4): 308-316. 2006.