生活型

herb

形態特徵

• Culms to 30 cm tall; stolons to 30 cm long, creeping then ascending; nodes 3 or 4 at anthesis, articulate, glabrous, covered by leaf sheath; internodes cylindrical to strongly compressed with keels.
• Leaf sheath scaberulous, compressed with a keel; ligule 4-5 mm long, membranous, abaxially pubescent, margin entire; blade 10-15 × ca. 1 cm, abaxial surface of central vein keeled, apex acuminate.
• Inflorescence a spreading panicle, 10-15 cm long; longest branch at middle or basal part of panicle, ca. 1/4-1/2 as long as panicle axis. Bract fan-shaped, ca. 0.3 mm long, membranous, margin irregular, falling easily. Spikelet with 1-5 florets; lower glume lanceolate to ovate, 2-2.5 mm long, 1-veined, scaberulous on vein, margin membranous, apex acuminate; upper glume lanceolate to ovate, 2.5-3 mm, 3-veined, tuberculate on veins margin membranous, apex acuminate; rachis webbed. Lemma ovate, 2.5-3 mm long, 5-veined, base of central vein puberulous, margin membranous, apex acuminate. Palea oblong, ca. 2 mm long, membranous, apex acute, 2-keeled, tuberculate on keels to 1/2 from apex. Lodicules 2, ca. 0.5 mm long, membranous. Anthers 3, ca. 1.5 mm long.

分布

• 世界 : is native in Europe; and naturalized in North America and Asia.

引證標本

Nantou Hsien: Hsin-yi Hsiang, Dongpu Hostel, Jun. 6 2005, Jung M.-J. x060608 (NCKU), x060609 (NCKU), x060610 (NCKU). Chia-yi Hsien: Ali-shan Hsiang, Alishan, Chen Y.-F. 22230 (NCKU), Ream 585 (US, United States National Herbarium), Er-Wan-Ping, May 30 2005, Jung M.-J. x053003, Jun. 1 2005, Jung M.-J. x060101 (NCKU), x060103 (NCKU), x060104 (NCKU), x060105 (NCKU), Jung M.-J. Aug. 2 2005, x080206 (NCKU).

引用文獻

• Ming-Jer Jung, Robert J. Soreng, and Chang-Sheng Kuoh, Taiwania 51(3): 240-248. 2006.