根茎冰草 gen jing bing cao

Agropyron cristatum (Linnaeus) Gaertner subsp. michnoi (Roshevitz) A. Löve.

Plants with long-creeping, branching rhizomes. Culms not tufted, erect, 42–68 cm tall, glabrous. Leaf sheath glabrous; ligule ca. 1 mm, scarious, apex truncate; leaf blade flat or margin inrolled, 3–9 × 0.2–0.4 cm, abaxial surface glabrous, adaxial surface puberulent and laxly villous together. Spike elliptic or elliptic-lanceolate, dense, 5–10 × 0.9–1.4 cm; rachis pubescent. Spikelets pale glaucous green, 5–10 mm, with 5–7(–10) florets. Glumes boat-shaped, glabrous but ciliate along keel; awn 1–3 mm; proximal glume 2.5–3.5 mm; distal glume 3–4 mm. Lemma lanceolate, ± woolly and bristly together; first lemma 5–8 mm; awn ca. 2 mm. Palea equaling lemma, ciliate along keels, apex acuminate. Fl. and fr. Jul–Sep.

Sandy banks. Nei Mongol [Mongolia, Russia].

This species is used for forage.