Leymus crassiusculus L. B. Cai

Culms erect, 70–110 cm tall, ca. 4 mm in diam., 2- or 3-noded. Leaf sheath glabrous or margin ciliate; ligule 1.5–2 mm, membranous, apex truncate; leaf blade usually rolled, 20–42 × 0.5–0.7 cm, both surfaces smooth, glabrous, or adaxial surface scabrous. Spike yellowish brown, dense, 16–22 × 1.5–2 cm, densely long soft hairy; rachis internodes 4–10 mm. Spikelets 4–6(–11) per node, 1.2–1.8 cm, with 4–7 florets; rachilla internodes 1–1.5 mm, densely pubescent. Glumes linear-lanceolate, subequal, 10–13 mm, shorter than spikelet, 1-veined, margin membranous, ciliate. Lemma lanceolate, obscurely 5-veined, densely pubescent; first lemma 8–10 mm, apex with awn less than 2 mm. Palea equaling lemma, laxly setose along keels, apex emarginate. Anthers yellow, ca. 5 mm. Fl. and fr. summer.

Qinghai (Xinghai), Shanxi (Pianguan, Taiyuan).

* Field margins; ca. 3000 m.