Fringed Brome: Bromus ciliatus (Synonyms: Bromopsis canadensis, Bromopsis ciliata, Bromus canadensis, Bromus ciliatus var. genuinus, Bromus ciliatus var. intonsus, Bromus dudleyi, Bromus richardsonii var. pallidus) -
Bald Brome, Hairy Chess, Meadow Brome: Bromus commutatus (Synonym: Bromus commutatus var. apricorum) -
Soft Brome, Soft Chess: Bromus hordeaceus (Synonyms: Bromus hordeaceus ssp. hordeaceus, Bromus mollis) -
Smooth Brome, Hungarian Brome: Bromus inermis (Synonyms: Bromopsis inermis, Bromus inermis ssp. inermis, Bromus inermis var. inermis) -
Field Brome, Japanese Brome: Bromus japonicus (Synonyms: Bromus anatolicus, Bromus arvensis, Bromus japonicus ssp. anatolicus, Bromus japonicus var. porrectus, Bromus patulus)
Chinook Brome, Orcutt Brome: Bromus orcuttianus (Synonym: Bromopsis orcuttiana) -
Pacific Brome: Bromus pacificus (Synonym: Bromopsis pacifica) - Collected at Peterson Prairie.
Arctic Brome: Bromus pumpellianus ssp. pumpellianus -
Rye Brome: Bromus secalinus (Synonyms: Bromus secalinus var. hirsutus , Bromus secalinus var. hirtus) -
California Brome: Bromus sitchensis var. carinatus (Synonyms: Bromus carinatus, Bromus carinatus var. californicus, Bromus carinatus var. carinatus, Bromus carinatus var. hookerianus, Ceratochloa carinata) - Collected on the Klickitat River SE of Mt. Adams.
Bordered California Brome, Large Mountain Brome, Mountain Brome: Bromus sitchensis var. marginatus (Synonyms: Bromus breviaristatus, Bromus carinatus var. linearis, Bromus carinatus var. marginatus, Bromus marginatus var. breviaristatus, Bromus marginatus var. latior, Bromus marginatus var. seminudus, Ceratochloa marginata) -
Suksdorf's Brome: Bromus suksdorfii (Synonyms: Bromopsis suksdorfii) -
Cheat Grass, Downy Cheat, Downy Chess: Bromus tectorum - Generally found in disturbed soils and along roadsides below 4000 feet on Mt. Adams.
Columbian Brome: Bromus vulgaris (Synonyms: Bromopsis vulgaris, Bromus vulgaris var. eximius, Bromus vulgaris var. robustus, Bromus vulgaris var. vulgaris) -