Canada

Pale pigeon grass

Setaria glauca (Setaria pumila)

Culms mostly slender, smooth or slightly rough below the inflorescence, more or less erect, weak, usually 2–4-noded. Sheaths glabrous, smooth, compressed, the upper terete, margins hyaline; ligule truncate, ciliate, 1–1.5 mm long; blade linear or linear-lanceolate, long-tapering, acuminate, to 30 cm long, 4–10 mm wide, glabrous or with some hairs towards the base, slightly scabrous.