Distribution: Introduced and established in much of the United States; rarely persistent in the Pacific Northwest.
Habitat: Waste ground, especially where moist.
Flowers: July - October
Origin: Introduced from Mediterranean
Growth Duration: Perennial
Conservation Status: Not of concern
Strongly rhizomatous perennial, the culms 1-1.5 m. tall.
Sheaths open; ligules about 2 mm. long, hairy and fringed; blades flat, 10-20 mm. broad.
Inflorescence a large panicle up to 3 dm. long, the branch tips raceme-like, ending in 3 spikelets; lower nodes each with a sessile, perfect-flowered spikelet and a pedicillate, staminate spikelet, the 2 spikelets about 6 mm. long; pedicillate spikelet unawned; sessile spikelet with an awn 9-15 mm. long; glumes hardened, shiny, unnerved; lemmas and paleas papery and delicate.