Distribution: Alaska to Newfoundland, south to Oregon, Idaho, Montana, Missouri, and New Jersey. Found on both sides of the Cascades in WA.
Habitat: Swampy areas in meadows, in irrigated fields, and along roadsides.
Flowers: June - July
Origin: Introduced from Europe
Conservation Status: Not of concern
Stout, herbaceous perennial 30-90 cm. tall; often grows in clumps due to stolons that develop when the lower nodes of the culms (aerial stems) take root in the soil.
3-10 cm. long, and 3-10 mm. wide; rough to the touch when rubbed (scabrous).
In terminal, narrowly columnar panicles 3-10 cm. long that taper slightly at both ends. Spikelets with one floret. Glumes and lemmas both about 5 mm. long; lemma with bent awn that attaches just above lemma base.
Attachment of bent awn to base of lemma distinguishes A. pratensis from A. aequalis, another introduced species of this genus that grows in wet ares.