粗雀麦 cu que mai

Serrafalcus grossus (Desfontaines ex Candolle) Rouy.

Annual. Culms erect, stout, 60–120 cm tall. Leaf sheaths hairy or glabrous; leaf blades large. Panicle erect, effuse, 15–20 cm, one-sided at maturity. Spikelets ovate-lanceolate, 20–40 × ca. 10 mm, florets 10–12; glumes leathery, veins conspicuous, sometimes with a short mucro at apex; lemmas 11–14 mm, scabrid, margins obtusely angled, apex shallowly 2-toothed, awned from below sinus; awn 5–10 mm, straight, stout; palea slightly shorter than lemma. Anthers 2–3 mm. Caryopsis 10–20 mm, inrolled when mature, slightly shorter than lemma. Fl. and fr. Jun–Sep. 2n = 28.

Waste ground on slopes. Xizang [Europe].

The presence of this species in China has not been confirmed.