Culms erect, 1-3 m. high; sheaths pubescent, becoming glabrous; blades ap-pressed, 5-10 cm. long, 8-15 mm. wide, acuminate or subattenuate, firm, tessellate-veined, the margins indurate, scabrous; panicles 7-15 mm. long, dark purple, narrow, condensed or somewhat loose, the rachis and appressed branches densely appressed-pubescent; spikelets 5-6 mm. long; glumes obtuse, the first 1 mm. long, the second 2 mm. long; sterile lemmas acute or apiculate, 5-nerved, more or less scabrous on the nerves, two-thirds to three-fourths as long as the spikelet; fertile lemma acute or apiculate, scabrous near the tip; palea a little shorter than the lemma, rounded on the back, but keeled and somewhat sulcate at the tip.
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