Slender, erect, tufted perennial 5–12 dm; lvs 2–6 mm wide, elongate, tapering to a fine point; infl diffusely branched, 2–5 dm, the branches spreading to ascending, glabrous, scarcely or not at all pilose in the axils; spikelets 4–10 mm, 4–18-fld; first glume 1.6–3.5 mm, the second 1.9–3.3 mm; lemmas 2.1–3.3 mm, compressed-keeled and with prominent lateral veins, at maturity falling individually, together with their paleas, from the intact rachis; anthers ca 1.5 mm. Dry sand, prairies, and open woods; Ill. to Nebr., Ark., and Tex. (E. pilifera)