生活型

herb

形態特徵

• Culms erect, to 100 cm tall, 5-7-noded; nodes articulate, glabrous, exposed.
• Ligule triangular, ca. 3 mm long, membranous, abaxial surface pubescent; sheath glabrous to pubescent, shorter than blades; blade up to 30 × 0.5-1.5 cm, 11-veined with one main vein.
• Inflorescence a panicle, spreading, with ca. 4 nodes, 30-40 cm long; basal branches ca. 15 cm long. Spikelet oblong, 2-4 cm × 3-6 mm, with 2-7 florets. Lower glume lanceolate, 0.9-1.2 cm long, 3-veined, margin membranous, apex acuminate. Upper glume lanceolate, 1.2-1.4 cm long, margin membranous, 7-veined, apex acuminate or with one short awn. Lemma lanceolate, 1.5-1.8 cm long, 7-veined with keeled central vein, apex obtuse; awn arising from center of apex, 6-9 mm long. Palea lanceolate, apex acuminate, 2-keeled, keels hispid. Anthers ca. 4 mm long. Ovary ca. 1.5 mm long, pilose, hairs ca. 0.75 mm long.

分布

• 台灣 : it occurs at Kuaigu, Tienchi and the entrance of the Li-guan Tunnel, along the Southern Cross-Island Highway (Taiwan Highway No. 20), and ca. 1800 m elevation.
• 世界 : western America.

引證標本

Kaohsiung Co.: Tau-yuan Hsiang. Entrance of Li-guan Tunnel, M.-J. Jung, (NCKU); Jhongjhihguan, T.-H. Hsieh & C.-F. Lin s. n., Jun 20, 2004 (NTNTC); Tienchi, M.-J. Jung(NCKU); Kuaigu, M.-J. Jung(NCKU).

參考文獻

• Ming-Jer Jung, Gwo-Ing Liao and Chang-Sheng Kuoh, Taiwania 51(2): 131-138. 2006.