Page authors: Don Knoke, David Giblin
Bromus commutatus
meadow brome

Distribution: Occurring on both sides of the Cascades crest in Washington; widely distributed throughout North America.

Habitat: Waste ground, meadows, roadsides.

Flowers: June-August

Origin: Introduced

Growth Duration: Annual

Conservation Status: Not of concern


Annual, the culms 2-9 dm. tall, erect.


Sheaths closed, covered with spreading, soft hairs; ligules 0.5-1.5 mm. long; blades flat, hairy, 2-5 mm. broad.


Inflorescence a loose panicle 7-15 cm. long, the branches ascending to spreading, the pedicles longer than the spikelets; spikelets 5- to 9-flowered, oblong-lanceolate, flattened, 13-20 mm. long; first glume 5-7 mm. long, 3-nerved, the second slightly longer, 7-nerved; lemmas 9-10 mm. long with awns 4-10 mm. long from a bifid apex; paleas 1-2 mm. shorter.

Accepted Name:
Bromus commutatus Schrad.
Publication: Fl. Germ. 353. 1806.

Synonyms & Misapplications:
Bromus commutatus Schrad. var. apricorum Simonk.
Additional Resources:

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

WA Flora Checklist: Bromus commutatus checklist entry.

E-Flora BC: Bromus commutatus atlas page.

CalPhotos: Bromus commutatus photos.

USDA Plants: Bromus commutatus information.

23 photographs:
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