天山披碱草 tian shan pi jian cao

Agropyron tianschanicum Drobow in Vvedensky et al., Key Fl. Tashkent 1: 40. 1923; Elymus tianschanicus (Drobow) Nevski (1934), not Drobow (1923); E. uralensis (Nevski) Tzvelev subsp. tianschanicus (Drobow) Tzvelev; Roegneria tianschanica (Drobow) Nevski; Semeiostachys tianschanica (Drobow) Drobow.

Culms erect, 50–100 cm tall, smooth, glabrous. Leaf sheath smooth, glabrous; leaf blade flat, 10–18 × 0.5–1 cm, both surfaces scabrous and pilose or abaxial surface scattered pilose. Spike erect or slightly nodding, subsecund, dense, 7–17.5 cm. Spikelets 1 per node, purplish green, 2–3 mm excluding awns, with 3–5(–7) florets. Glumes broadly lanceolate, slightly asymmetric, subequal, 9–12 mm, 5–7-veined, scabrous, apex acute or mucronate, sometimes with a tooth. Lemma lanceolate, 9–12 mm, pilose; awn straight, (4–)7–16 mm. Palea equaling or slightly longer than lemma, ciliate along keels, apex slightly emarginate or subobtuse. Anthers ca. 2.5 mm. Fl. and fr. summer. 2n = 28.

Slopes in river valleys, meadows; 2700–3000 m. Xinjiang [Kazakhstan, Kyrgyzstan, Turkmenistan, Uzbekistan].