Culms erect, 60–75 cm tall. Leaf sheath densely villous; leaf blade flat or slightly rolled, 9–15 × 0.3–0.6 cm, villous throughout. Spike slightly curved, 9–12 cm; rachis with swollen nodes, densely hirsute throughout, margin narrowly winged. Spikelets usually 2 per node, or 1 per node at apex and base of spike, 6–10 mm, with 2 or 3 florets. Glumes narrowly lanceolate, 4.5–7.5 mm, 3- or 4-veined, hirsutulous along veins, margin narrowly membranous, apex acuminate or with awn 1.5–2.5 mm. Lemma oblong-lanceolate, scabrous or hispidulous distally; first lemma 7–11 mm. Palea equaling lemma, ciliolate along keels, pubescent between keels. Fl. and fr. late summer.

* Swales of mountain valleys. Nei Mongol.