Bromus japonicus Japanese chess Poaceae BRJA*; Q, fr, j, wl; R, d, e, fk, h, js, lp; 


Bromus japonicus.Neal S. Ratzlaff.Fontenelle

Bromus japonicus.© Neal S. Ratzlaff.Fontenelle Nature (Accessed 4/2015).

Bromus japonicus is an annual C3 grass (Williams et al. 2011), to 120 cm tall, (very similar to B. commutatus but inflorescence larger) sheaths closed, lower sheaths hairy; ligules to 0.2 cm, membranous. 

Leaves alternate, blade softly hairy, to 0.7 cm wide, shorter than inflorescence. 

Flower spikelets to 1.5-3 cm long, at ends of branches, 4-10 flowers; glumes much shorter than lemmas which are 0.8-0.9 cm, awn 0.7-1.2 cm, curved; inflorescence open, 4-15 cm, branches slender, drooping, as long as spikelets; blooming and fruiting June-Aug. 

Wetland status: FACU. 

Frequency in NYC: Infrequent. 

Origin: Eurasia. 

Habitat: Open areas, fill, roadsides.