Annual; culms 10-75 cm., usually 20-40 cm., high, erect or ascending, some-times widely spreading, branching from the lower and middle nodes; sheaths compressed, keeled, longer than the internodes in small plants, shorter than the internodes on taller plants, from glabrous to conspicuously papillose-pilose; ligule about 2 mm. long, brown, fragile; blades 5-23 cm. long, 3-11 mm. wide, the uppermost sometimes reduced, somewhat clasping at the base, conspicuously papillose-pilose throughout or only toward the base; racemes 1-4, erect to spread-ing at maturity, 1.5-7 cm. long, the rachis 1-2 mm. wide, long-pilose at the base; spikelets 2.2-3 mm. long, paired, broadly obovate, glabrous or appressed-pubescent; fruit dark brown, shining, minutely striate.
Home