Page authors: Don Knoke, David Giblin
Bromus hordeaceus
soft chess

Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to Baja California, east to Idaho and Montana.

Habitat: Prairies, bluffs, grasslands, waste ground, roadsides, dry hillsides, and other disturbed areas.

Flowers: April-July

Origin: Introduced from Europe

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Wind


Annual, the culms 2-7 dm. tall, usually soft-pubescent throughout.


Sheaths closed; ligules 0.5-1 mm. long, hairy; blades flat, 1.5-4 mm. broad.


Inflorescence an erect, narrow, crowded panicle 3-10 cm. long, the spikelets exceeding the pedicles; spikelets 5- to 7-flowered, 1-2 cm. long; first glume 4-6 mm. long, lanceolate, the second slightly longer and wider; lemmas 6.5-8.5 mm. long, the area between the nerves depressed and concave; lemmas with straight awns 6-10 mm. long from a bifid apex.

Accepted Name:
Bromus hordeaceus L.
Publication: Sp. Pl. 1: 77. 1753. 1753.

Synonyms & Misapplications:
Bromus hordeaceus L. ssp. hordeaceus
Bromus mollis L. [HC]
Additional Resources:

PNW Herbaria: Specimen records of Bromus hordeaceus in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Bromus hordeaceus checklist entry

OregonFlora: Bromus hordeaceus information

E-Flora BC: Bromus hordeaceus atlas page

CalPhotos: Bromus hordeaceus photos

14 photographs:
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