生活型

herb

形態特徵

• Perennials with knotty rhizome; culm erect, base geniculate.
• Sheath compressed and keeled; ligule a ring of haris.
• Spikelets ca. 2.5 mm long; glumes membranaceous; lower glume acute, to 1/3 length of spikelet, 3-veined; upper glume obtuse, to 1/2 as long as spikelet, 5-veined; lower lemma membranaceous, as long as spikelet, 5-veined; palea flattened, 2-keeled, as long as lemma; upper lemma indurate, rugose, 5-veined, palea flattened abaxially, 2-keeled, nearly as long as lemma and spikelet; anthers up to1 mm long.
• Caryopsis ca. 1.5 mm long, clasped by broad margins of palea.

分布

• 台灣 : in moist places.
• 世界 : Originally from tropical America, introduced into other countries.

引證標本

ILAN: Kuaishan, Kuoh 2471.TAIPEI: Shihmen, Hsu 1262. TAOYUAN: Neili, Hsu 1237. HSINCHU: Hsinchu, Huang 2112; Yuen Yang Lake, Hsu & Kuoh 14532. MIAOLI: Tahu, Cheng 78. TAICHUNG: Lishan, Kuoh 80122. NANTOU: Kuantaochi, Hsu 10659; Sun Moon Lake, Hsu 1314. TAINAN: Hsinhua, Hsu 326. PENGHU: Hongkuawy, Hsu 11553; Makung, Kuoh 1099. PINGTUNG: Ssuchungchi, Hsu 1111. TAITUNG: Lanyu Is., Hsu 1003; Tawu, Hsu 330. HUALIEN: Chilaishan, Sasaki s. n.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 510. 2000.  (Fl. Taiwan 2nd edit.)