生活型

herb

形態特徵

• Rhizome short. Culms tufted, to 120 cm tall, 0.5-2 mm in diam.; nodes bearded.
• Blade scabrous, basal part usually tubercled hairy, 10-20 cm long; ligule membranaceous, 0.5-1 mm long, ciliate upper margin; sheath and mouth of sheath hairy. Panicle to 12 cm long; branches 1-3-noded; capillary, axils pilose.
• Spikelets paired, one pedicellate and other sessile. Sessile spikelet oblong-lanceolate, slightly dorsally compressed, 3-4 mm long; callus hairy; lower glume with stiff hairs on dorsal part, 4-nerved, margins inrolled and keeled, keels ciliate; upper glume boat shaped, subequal to Iower lemma, 3-nerved, hairy along upper margin; lower lemma elliptic, ca. 1/3 its length of spikelet, dentate; upper lemma linear, tipped with an awn of 10-15 mm long, awn geniculate, scabrid. Pedicellate spikelet awnless, smaller, reduced.
• Two varieties are recognized based on the number of joints of rachis.

分布

• 世界 : Widely distributed in tropics of the Old World, including Japan, China, Polynesia, Malaysia, Australia, Ethiopia and Abyssinia.

引證標本

TAIPEI: Shanchuchiao, Hsu 1202*. ILAN: Yuanshan, Hsu 8384. HSINCHU: Hsinchu, Hsu 1307. MIAOLI: Dahkuan, Hsu 578. TAICHUNG: Tatushan, Lin s. n. 11 Oct 1969. TAINAN: Tainan, Hsu 6478. PENGHU: Huang & Kao 6856. PINGTUNG: Ssuchungchi, Hsu 1112. HUALIEN: Tienshing, Kao et al. 7000.

引用文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 531. 2000.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)