Bromus inermis

Shortly rhizomatous perennial, culms erect, to c. 80(–120) cm high. Leaves glabrous; blade flat or loosely folded, to 20 cm long and 8(–13) mm wide, lightly scabrous; ligule glabrous, truncate, c. 1 mm long. Inflorescence narrowly ovate, to c. 20 cm long, branches initially sub-erect, the primary branches eventually spreading. Spikelets 5–8-flowered, oblong, 15–30 mm long; lower glume 1-nerved, 4–8 mm long, upper glume 3-nerved, 6–11 mm long; lemma 8–12 mm long, excluding awn (if present), rounded or almost flattened dorsally, scabrous along nerves, shallowly notched at apex, usually with a fine awn to 3 mm long inserted in the notch. Flowers Nov. (1 record).