Culms up to 50 cm tall, relatively robust. Basal leaf sheaths papery, finally fibrous; leaf blades flat or inrolled, 24–30 × ca. 0.2 cm, adaxial surface scaberulous, pilose with long hairs toward ligule, abaxial surface glabrous. Racemes 10–20 cm, flexuose, fairly dense, spikelets loosely erect to slightly diverging from rachis, imbricate by 1/2–2/3 their length. Spikelets 7–14 mm, pallid to dark gray; florets 5–13, loosely to densely imbricate; lower glume lanceolate, asymmetrical, broadened on one side into a lobe or tooth, 2.4–4.2 mm, acute; upper glume narrowly oblong-elliptic, 4–6.5 mm, apex subacute and mucronate; lemmas lanceolate, 2.6–4 mm to sinus, narrowly bifid, central awn 6–11 mm, flexuose, teeth acuminate, lateral veins extended from their tips into 0.4–1.5 mm awns; palea keels winged, ciliolate. Anthers 2–3, 1.4–1.7 mm. Fl. and fr. Jul.
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