Rat's tail fescue
Vulpia myuros

Densely tufted annual to 0.6 m high.

Culms erect, smooth, glabrous; nodes 2–3, glabrous. Sheaths becoming loose with age, smooth, glabrous or apex sometimes scattered with hairs <0.25 mm long; ligule membranous, <0.5 mm long, truncate, erose; blade 2–15 cm long, abaxial surface glabrous, adaxial surface pilose or pubescent with hairs <0.5 mm long.