Distribution: Introduced and weedy in much of the United States and southern Canada.
Habitat: Moist and irrigated areas, along streams and around ponds.
Flowers: June - September
Growth Duration: Annual
Conservation Status: Not of concern
Annual, branching from the base, the culms erect to decumbent, 2-7 dm. tall, copiously covered with soft hairs 2-4 mm. long.
Sheaths open; articulation below the glumes; ligules composed of straight hairs 1.5-2 mm. long; blades 5-12 mm. broad.
Inflorescence a diffusely-branched panicle 1-3 dm. long. often partially included in the uppermost sheath; spikelets 2-flowered, 2.5-3 mm. long; first glume 3-nerved, half as long and the spikelet; second glume 7-nerved, about as long as the lower lemma, which is sterile and 9-nerved, both well exceeding and enclosing the fertile lemma and palea.