粗稈雀稗

Perennials; rhizome short, culm tufted, erect, 1-2 m high. Blade stiff, margins sharp with siliceous bodies; sheath keeled, compressed, lower ones softer, papery. Inflorescence of racemose racemes, numerous; rachis prominently covered with papillate bristles. Spikelets obovate, 2.2-2.5 mm long, densely 4-rowed, brownish, margins hairy, prominent at summit; lower glume reduced; upper glume 3- veined, convexed on dorsal part, subequal to spikelet, margins and summit soft hairy; lower lemma and upper glume subequal, with marginal hairs, flat on dorsal part, upper floret brownish, coriaceous, slightly shorter than spikelet.

TAIPEI: Nankang, Hsu 14517.

Originally from Jamaica, now naturalized elsewhere. Taiwan, naturalized in the northern part.