Culms densely tufted, 60–70 cm tall, 1.2–2 mm in diam., 2-or 3-noded, glabrous but pubescent just below spike. Leaf sheath glabrous; ligule ca. 0.5 mm, hyaline-membranous, apex truncate; leaf blade involute, 9–10(–15) × 0.2–0.7 cm, abaxial surface glabrous, adaxial surface densely villous along lateral veins, or both surfaces villous on surculose leaves. Spike lanceolate to obovate, 8–10 × 0.8–1.2 cm; rachis densely villous; internodes 2–7 mm. Spikelets purple, 12–16 mm excluding awns, with 5–8 florets; rachilla densely pubescent; internodes 0.5–2 mm. Glumes oblong, equal or subequal, 6–7(–9) mm, 3–5-veined, densely hirsute, apex acute, mucronate, or with awn 1–2 mm. Lemma ovate, 7–9 mm, densely villous; callus with hairs ca. 0.8 mm laterally, 0.2–0.5 mm elsewhere; awn erect, 10–15 mm, scabrous. Palea subequaling lemma, sparsely ciliate along keels distally, puberulent or scabrous between keels, apex emarginate or truncate. Anthers yellow to purple, ca. 3 mm. Caryopsis brown, ca. 6 mm. Fl. and fr. late summer. 2n = 42*.
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