生活型

herb

形態特徵

• Perennials; rhizomes and culms erect, farinose below nodes, hairy below inflorescence.
• Ligule obtuse, ca. 2 mm long, shortly ciliate.
• Inflorescence a large panicle of ca. 20 cm long, branches erect, rachis and pedicels slender. Spikelets paired, monomorphic, lanceolate, 3-5 mm long, usually darkbrown, whitish, pointed above, callus with silky hairs; glumes persistent, pointed, coriaceous at base; lower glume ciliate on margins, 3-5 mm long, 2-keeled; upper glume boat shaped, margins ciliate, slightly smaller than lower, 1-keeled; lower lemma oblong, fringed at apex, margins ciliate, ca. 3 mm long, nerves obscure; palea wanting; upper lemma linear-elliptic, pointed, slightly fringed, ca. 3 mm long; palea ca. 1 mm long, upper margin fringed.
• Caryopsis ca. 1.5 mm long, embryo 2/3 its length of grain.

分布

• 台灣 : common in gravelly river beds that are nearly dry except during floods.
• 世界 : Widely distributed in the warmer regions of the Old World.

引證標本

TAIPEI: Taipei City, Tanaka & Shimada s. n. Nov 1934*. Hsinchuan, Sasaki s. n. 12 Nov 1933. TAINAN: Tachiading, Morimoto 689. PINGTUNG: Tsutien, Hsu 525. TAITUNG: Lanyu Is., Sasaki s. n. 20 Sep 1937.

參考文獻

• HSU, Chien-Chang, Flora of Taiwan, second edition 5: 574. 2000.  (Fl. Taiwan 2nd edit.)