甘蒙雀麦 gan meng que mai

Bromopsis korotkiji (Drobow) Holub; B. pumpelliana (Scribner) Holub subsp. korotkiji (Drobow) Tzvelev; B. pum-pelliana var. ircutensis (Komarov) Tzvelev; Bromus ircutensis Komarov; Zerna korotkiji (Drobow) Nevski.

Perennial, with long, creeping rhizome; old basal sheaths lacerate to fibrous. Culms erect, 70–90 cm tall, stout, hard, densely retrorsely pubescent below nodes and in inflorescence. Leaf sheaths longer than internodes, densely pubescent to glabrous; leaf blades hard, 15–30 cm × 3–6 mm, adaxial surface pubescent; ligule brown, ca. 1 mm, hard. Panicle erect, narrow, 7–15 cm; branches 2–5 per node, erect, ca. 1–2(–5) cm, shortly hairy, each bearing 1 or 2 spikelets. Spikelet 1.5–3.5 × ca. 1 cm, florets 5–10, light brown sometimes violet tinged; rachilla 2–4 mm, laterally visible, sparsely to densely pilose; glumes membranous, glabrous, lower glume narrowly lanceolate, 6–8 mm, 1-veined, upper glume narrowly lanceolate, 6–11 mm, 3-veined; lemmas broadly lanceolate, 10–15 mm, 5–7-veined, margins densely pubescent with white, 1–2 mm hairs, apex obtuse; awn absent; palea narrow, subequal to lemma, keels ciliate in upper part. Anthers 5–7 mm. Fl. and fr. May–Sep.

Wet riverside sands, sand dunes. Gansu, Nei Mongol, Xinjiang [Mongolia, Russia (Siberia)].