Page authors: David Giblin, Don Knoke
Cardamine breweri
Brewer's bittercress, round bittercress

Distribution: Distributed on both sides of the Cascades in Washington; British Columbia to California, east to the Rocky Mountains from Montana south to Colorado.

Habitat: Stream margins, wet meadows, pond shores, and other riparian areas.

Flowers: April-August

Origin: Native

Conservation Status: Not of concern


Erect to spreading perennial, with slender rhizomes 2 mm. thick, but 4 mm. thick at the base of the stems; flowering stems simple to branched, 2-6 dm. tall, mostly glabrous.


: Leaves glabrous, the few basal ones usually simple, the blade 1-3 cm. long, cordate or ovate; cauline leaves compound with 2-4 lanceolate to ovate lobes, the terminal one dentate-lobed.


Flowers in racemes, the pedicles ascending, 5-20 mm. long; sepals 4, 1.5-2.5 mm. long; petals 4, white, obovate, 3-7 mm. long; style 0.5-2 mm. long.


Siliques erect, 2-3 cm. long, 1-1.5 mm. broad.

Accepted Name:
Cardamine breweri S. Watson
Publication: Proc. Amer. Acad. Arts. 10: 339. 1875. 1875.

Synonyms & Misapplications:
Cardamine breweri S. Watson var. breweri [HC]
Cardamine breweri S. Watson var. leibergii (Holz.) C.L. Hitchc. [HC]
Cardamine breweri S. Watson var. orbicularis (Greene) Detling [HC]
Cardamine breweri S. Watson var. oregana (Piper) Detling
Cardamine callosicrenata Piper
Cardamine foliacea Greene
Cardamine oregana Piper
Additional Resources:

PNW Herbaria: Specimen records of Cardamine breweri in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Cardamine breweri checklist entry.

E-Flora BC: Cardamine breweri atlas page.

CalPhotos: Cardamine breweri photos.

USDA Plants: Cardamine breweri information.

10 photographs:
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