Erianthus arundinaceus (Retz.) Jesw., Arch. Suikerind, Nederl. India. 33; 399. 1925. Hsu, Fl. Taiwan 5: 648. 1978.
Saccharum arundinaceum Retz., Obs. Bot. 4: 14. 1786
Tall reed; culm solid, up to 1 cm across, more than 2 m tall. Blade about 2 cm wide, margins siliceous; ligule chartaceous, hispid on the back. Inflorescence a large panicle. Spikelets in threes, monomorphic; rachis articulating; lower spikelet about 4.S mm long, falling off together with the rachis-joint; lower glume chartaceous, lanceolate, 2-keeled, sericeous on the back, as long as the spikelet; upper glume chartaceous, lanceolate, with margins slightly inrolled, 5-nerved sericeous, pointed; lower lemma about 3.8 mm long, 3-nerved, upper margins: inrolled, fimbriate; upper lemma membranous, margins inrolled, upper half fimbriate, pointed, about 3 mm long; upper palea hyaline, ovate, about 2 mm long, ciliate at the apex. Caryopsis about 2 mm long, cylindrical; embryo 1/2 the length of the caryopsis.
PENGHU: Penghu, Hsiang s. n. March 21, 1964.
Distributed in Malaysia, the Ryukyus and South China.
A tall reed growing along rivers.