Bromus racemosus is an annual C3 grass (Williams et al. 2011), 30 cm to 1 m tall, lower sheaths hairy, upper sheaths less hairy to smooth.
Leaves alternate, finely hairy.
Flower spikelets 4-10 flowered, 1-1.5 cm long; glumes to 0.4-0.7 cm long; lemmas to 0.8 cm hood-shaped, tip rounded, awn 0.5-0.9 cm long; inflorescence 5-15 cm long, narrow, branches strongly ascending; blooming and fruiting June-Aug.
Wetland status: NL.
Frequency in NYC: Very infrequent.
Habitat: Open sites.