Distribution: Throughout Washington; common throughout temperate world.
Habitat: Moist, distrurbed areas at from the coast to middle elevations.
Flowers: April - October
Origin: Both native and introduced
Conservation Status: Not of concern
Strongly rhizomatous perennial, the culms hollow, glabrous, 4-10 dm. tall.
Sheaths closed about half their length; ligules 1-1.5 mm. long, truncate, usually entire; blades flat, numerous, 2-4 mm. broad, the tips strongly prow-shaped.
Inflorescence a moderately loose panicle 3-10 cm. long, the branches slightly ascending, the lower ones 3-5 per node; spikelets 3- to 5-flowered; glumes 2.5 and 3 mm. long, strongly keeled; lemmas about 3.5 mm. long, strongly keeled, cobwebby at the base; palea subequal to the lemma, 2-keeled.