生活型

herb

形態特徵

• Perennial, culms erect to ascending, to 50 cm long, nodes glabrous, exposed.
• sheath 5-10 cm long, shorter than the internode, ligule ca. 0.2 mm long, membranous, blade linear, 8-20 cm long, base adaxially pilose, hairs 4-8 mm long.
• Panicles 10-20 cm long, constricted to open. Spikelets disarticulating from the base upward, rachilla persistent. Glumes early deciduous, similar, 1-nerved, apex acute; lower glume ovate-lanceolate, 1-1.5 mm long; upper glume ovate. Lemma soon deciduous, ovate, 1.5-2 mm long, apex acute, 3-nerved. Palea soon deciduous, elliptic, apex acute, as long as the lemma, 2-keeled, keels scabrous. Lodicules ca. 0.2 mm long, apex truncate; anthers 3, 0.7-0.8 mm long.
• Caryopsis ellipsoid, surface striolate, cross section round, 0.6-1 mm long.

分布

• 台灣 : in waste areas at low elevations in northern and central Taiwan, and is bound to spread.
• 世界 : is native in tropical Africa and Asia, and has been introduced into the Pacific, North America, Mexico, and Australia.

引證標本

Taipei City, Campus of National Taiwan University, M.-J. Jung z020401; Muzha Daunan Riverside Park, M.-J. Jung x021903 (NCKU). Tauyuan Co., Y. Simada 420 (HAST). Hsinchu Co., Jhu-Bei City, Lienhwashih, C.-I Peng 5120, 8594 (HAST), M.-J. Jung z041206, z041207. Miaoli Co., Miao-Li City, Fifth Public Cemetery, M.-J. Jung y123101, z012106; San-Yi Town, Huoyanshan Tunnel, M.-J. Jung z032905; Tong-Luo Town, Chu-Tzen, M.-J. Jung z032903, Shuang-Fong-Shan, M.-J. Jung y122304; Tong-Siao Town, Fifth Public Cemetery, M.-J. Jung y122307, z070502. Changhua Co., Chang-Pin Industrial area, near the Chung-Hua Construction Site, T.-Y. Yang 3996 (TNM). Nantou Co., Yu-Chih Town, Lienhwachih, M.-J. Jung z032202; Shin-Shan Forestry Road, M.-J. Jung z032203.

參考文獻

• Ming-Jer Jung, Jan Frederik Veldkamp and Chang-Sheng Kuoh, Taiwania 53(1): 96-102. 2008.