达乌里羊茅 da wu li yang mao

Plants densely tufted, base clothed in old sheaths; shoots intravaginal. Culms (20–)30–60 cm tall; nodes 1–2. Leaf sheaths glabrous; auricles present as erect swellings; leaf blades conduplicate, 4–15 cm × 0.5–1 mm, veins 5–7; adaxial to abaxial sclerenchyma strands absent, abaxial sclerenchyma in 3 broad bands; ligule 0.2–0.3 mm, margin ciliolate. Panicle narrow, contracted, (3–)6–8 cm; branches 1–3 cm, pubescent, 1–2 at lowest node. Spikelets 6–8.5 mm, greenish or purplish, brownish at maturity; florets 4–6; glumes glabrous, apex acute; lower glume lanceolate, 3–4 mm; upper glume lanceolate or elliptic, 3.5–5 mm; rachilla internodes 1–1.5 mm; lemmas 4.5–6.5 mm, scabrid or pubescent, awnless; palea keels glabrous. Anthers (2–)2.5–3 mm. Ovary apex glabrous. Fl. and fr. Jun.

Hill slopes; 600–3200 m. Gansu, Hebei, Heilongjiang, Jilin, Nei Mongol, Qinghai [Mongolia, E Russia].