Bromus
brome
22 species
6 subspecies and varieties
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Scientific name
Common name
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Bromus arenariusAustralian brome
Origin: Introduced
Bromus briziformisrattlesnake brome
Distribution: Southern British Columbia south to California, east to Idaho and Montana; occasional in eastern United States.
Habitat: Waste ground, roadsides, and overgrazed areas.
Origin: Introduced
Flowers: Late May - July
Bromus ciliatusfringed brome
Origin: Native
Flowers: July - August
Bromus commutatusmeadow brome
Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout North America.
Habitat: Waste ground, meadows, roadsides.
Origin: Introduced
Flowers: June-August
Bromus diandrusgreat brome, ripgut brome, ripgut grass
Distribution: Introduced from British Columbia to Baja California, mostly west of the Cascades in Washington, but east to Idaho and Colorado.
Habitat: A weed of waste ground and along highways and railroads.
Origin: Introduced
Flowers: April - June
Bromus erectusupright brome
Origin: Introduced
Flowers: June - July
Bromus hordeaceussoft chess
Distribution: Common introduction from Alaska south to Baja California, east to Idaho and Montana.
Habitat: Waste ground, roadsides, dry hillsides.
Origin: Introduced
Flowers: May - July
Bromus inermissmooth brome
Distribution: Alaska to California, east to Labrador and Vermont.
Habitat: Commonly used in hayfields and pastures; disturbed areas, old fields, meadows and streambanks from the lowlands to subalpine slopes.
Origin: Introduced
Flowers: June - August
Bromus japonicusJapanese brome
Distribution: East of the Cascades, southern British Columbia to California, east across Canada and most of eastern United States.
Habitat: Sagebrush desert and grasslands to lower mountain forests; often a weed of roadsides and waste land.
Origin: Introduced
Flowers: June - August
Bromus madritensiscompact brome
Origin: Introduced
Bromus orcuttianuschinook brome
Origin: Native
Flowers: July - August
Bromus pacificusPacific brome
Distribution: West of the Cascades crest in Washington; Alaska south to Oregon.
Habitat: Meadows and forest openingsat low elevations, often near or along the coast.
Origin: Native
Flowers: May-June
Bromus pumpellianuspumpelly brome
Distribution: Occurring east of the Cascades crest in Washington; Alaska to Oregon, east to Rocky Mountains.
Habitat: Stream banks, lake shores, sand dunes, meadows, grassy slopes, and roadsides
Origin: Native
Flowers: June-August
ssp. pumpellianus – arctic brome
Bromus racemosusbald brome
Origin: Introduced
Bromus rubensfox-tail brome
Distribution: Chiefly east of the Cascades in Washington; central Washington south to California, east to Idaho, Utah and Arizona.
Habitat: Common weed on overgrazed land, waste areas.
Origin: Introduced
Flowers: May-June
Bromus secalinusrye brome
Distribution: Occurring on both sides of the Cascades in Washington; widely distributed throughout North America.
Habitat: Disturbed, open ground.
Origin: Introduced
Flowers: June-July
Bromus sitchensisAlaska brome
Distribution: Along or near the coast from Alaska south to northwest Oregon.
Habitat: Meadowland to subalpine streambanks and talus slopes.
Origin: Native
Flowers: June - September
var. aleutensis – Aleut brome
var. carinatus – California brome
var. marginatus – large mountain brome
var. polyanthus – smooth brome
var. sitchensis – Sitka brome
Bromus squarrosuscorn brome
Distribution: Occurring east of the Cascades crest in Washington; British Columbia south to Oregon, east in scattered locations to the Atlantic Coast.
Habitat: Open, disturbed areas including fields, meadows, and forest openings.
Origin: Introduced
Flowers: June-July
Bromus sterilispoverty brome
Distribution: Southern British Columbia south to California, and in the Rocky Mountains and eastern United States.
Habitat: Roadsides and waste places.
Origin: Introduced
Flowers: May - July
Bromus suksdorfiiSuksdorf's brome
Origin: Native
Flowers: July - August
Bromus tectorumcheat grass
Distribution: Chiefly east of the Cascades,Alaska south to Baja California, east to Maine and Texas.
Habitat: Waste or disturbed areas, especially common on overgrazed land.
Origin: Introduced
Flowers: April - June
Bromus vulgarisColumbian brome
Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia south along the coast to northern California, east to Alberta, Montana and Wyoming.
Habitat: Shaded to open woods or moist to dry banks, from near sea level to mountain meadows and dry, rocky slopes at 6000' elevation.
Origin: Native
Flowers: June-August