Phalaris angusta

Slender, erect, rather few-leaved annual to c. 80 cm high. Leaves smooth, glabrous; blade to c. 30 cm long, 11 mm wide; ligule obtuse, often becoming torn, 3–8 mm long, Panicle dense, cylindric, 2–15 cm long. Spikelets 3–4.5 mm long; glumes 3-nerved, subequal, winged on the keel in the upper two-thirds, keel scabrous; sterile lemmas subequal, about one-third as long as fertile lemma, narrow, appressedly pilose; fertile lemma ovate-lanceolate, acute to acuminate at apex, 2–3.6 mm long, sericeous. Flowers Oct.–Nov.