生活型

herb

形態特徵

• Culms tufted.
• Blade ca. 1.5 mm wide, surface siliceous; ligule ciliate , ca. 0.3 mm long.
• Inflorescence a digitate spike. Spikelets 3-flowered, ca. 3 mm long; glumes membranaceous, conspicuously 1-nerved; lower glume deltoid-lanceolate, ca. 1.2 mm long, acute; upper glume narrowly lanceolate, ca. 2.5 mm long, shortly awned; lower floret fertile; lemma ca. 2.7 mm long, chartaceous, 3-nerved, midrib extending into a long awn of 4 times their length of lemma, margins hispid, 2-toothed; palea ca. 2.2 mm long, membranaceous, with a sinus at apex, minutely ciliate, 2-keeled, upper part oblong, lower part linear; sterile lemma 2-lobed, 3-nerved, margins siliceous; anthers ca. 0.5 mm long.
• Caryopsis, ca. 1.6 mm long; embryo 1/2 as long as caryopsis.
• Cattle are said to be partial to this grass when it is young, but avoid it when the inflorescence matures. It has a purplish inftorescence with nearly globose sterile lemmas.

分布

• 世界 : Tropical southeast Asia, introduced elsewhere, but some authors have considered it to be a native of tropical America.

引證標本

NANTOU: Chitou, Kuoh 13502. CHIAYI: Chiayi, De Vol 7095*. TAINAN: Hsinhua, Wang 20080. KAOHSIUNG: Kaohsiung, Hsu 533-1. PINGTUNG: Ssuchungchi, Chang 2121.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 403. 2000.  (Fl. Taiwan 2nd edit.)