鳞稃雀麦 lin fu que mai

Bromus gracilis Krösche, Repert. Spec. Nov. Regni Veg. 19: 329. 1924, not Leysser (1761), nor Weigel (1772); Bromus hordeaceus Linnaeus subsp. lepidus (Holmberg) A. Pedersen.

Annual or biennial. Culms slender, erect, 20–50 cm tall, 2–6-noded. Leaf sheaths pubescent or upper sheaths glabrous; leaf blades flat, 5–20 cm × 2–4 mm, pubescent; ligule up to 1 mm. Panicle erect, narrow, lax or dense, 2–10 cm; branches clustered, up to 4 cm, each bearing 1–3 spikelets. Spikelets lanceolate, 7–15 × 2.5–4 mm, glabrous, shiny, florets 3–11, overlapping at first, later slightly separated; glumes unequal, lower glume ca. 6 mm, upper glume 7–8 mm; lemmas broadly ovate, 7–8 mm, 7-veined, scaberulous, margins membranous, sharply incurved at maturity, apex 2-toothed; awn 2–5 mm, straight; palea shorter than lemma, keels ciliate. Anthers 0.5–2 mm. Caryopsis longer than palea. 2n = 28.

Waste ground; ca. 700 m. Xinjiang [Europe; introduced in America].