Glyceria notata

Loosely tufted or rhizomatous perennial, culms ascending, to 1 m high. Leaf-blades to 30 cm long and 14 mm wide, narrowly tapered and acute at apex; sheaths closed toward base, transverse veins indistinct or lacking; ligules 2–9 mm long, truncate, soon becoming shredded. Inflorescence a loose, slender panicle, or sometimes a raceme, often appearing one-sided, 10–50 cm long; spikelets 7–16-flowered, 15–25 mm long; lower glume 1.5–2.5 mm long, upper glume c. 1–1.5 mm longer than lower; lemma prominently 7-nerved, ovate, 3.5–5 mm long, firm except for membranous apex which is entire (sometimes weakly and irregularly indented); palea bifid, the two teeth equal to or not quite reaching the lemma tip. Flowers Nov.–Jan.