Tufted annual 3–8 dm, the culms hirsutulous; lvs flat, 4–7 mm wide, hairy; panicle 10–15 cm, contracted, its base included in the upper sheath; racemes several, overlapping, 1–2 cm, the rachis and pedicels (1 mm) hairy, the thickened pedicel-tip glabrous, purple-margined; spikelets borne singly at the nodes of the infl-branches, or paired only at the base, lance-ovoid, 3.5–4 mm, the second glume slenderly acuminate, the sterile lemma similar but a little shorter; fertile lemma with a slender awn 0.3–1 mm; 2n=36. Damp soil; Nebr. to Colo., La., and Ariz., and intr. in Minn., Mo., Ill., and Va.
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