Culms rather slender, erect, 6-15 dm tall, often rooting from lower nodes
when partly submersed; leaves green to glaucous, the blades rather lax,
flat, 2-6 mm wide. Panicle rather loose and open, 8-20 cm long, the branches
ascending to spreading. Glumes (1.5)2-4 mm long, glabrous or scaberulous
on the back; lemma 1.5-3 mm long, thin, translucent, glabrous to scaberulous;
anthers 1-1.7 mm long. Late Jun--Aug. Wet meadows, shallow marshes, boggy
areas, springs and stream banks; frequent in the n and e parts, also the Black
Hills and the Sand Hills, otherwise uncommon; (Greenl. to AK, s to NJ, WV, NC,
MO, KS, NM and CA).