Annual; culms slender, densely tufted, freely branching from the lower nodes, ascending or spreading, mostly 10-30 cm. high, sometimes depauperate or rarely as much as 60 cm. tall; sheaths usually longer than the internodes, keeled, glabrous or more or less pilose, the margins often ciliate, especially toward the summit; blades 2-15 cm. long, 1.5-2.5 mm. wide, from nearly glabrous to densely short-pubescent, usually papillose-pilose as well; racemes 2, rarely 1 or 3, conjugate, divergent, 1.5-6 cm. long; spikelets 1.2-1.5 mm. long, subhemispheric, solitary, from glabrous to rather densely beaded with subglobular hairs; second glume and sterile lemma equal, covering the fruit, or the glume rarely reduced or wanting; fruit about the size of the spikelet, minutely striate.
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