Cardamine penduliflora
Willamette Valley bittercress

Distribution: Southwestern Washington; Washington south to Oregon, from the Willamette Valley to the Coast.

Habitat: Lowland ponds and marshes.

Flowers: April-May

Conservation Status: Not of concern


Glabrous annual with slender rhizomes that are enlarged and tuberous at the tips; stems simple, procumbent, often rooting at the nodes, 2-4 dm. long.


Leaves alternate, mostly cauline, pinnate, the lateral pinnae 6-10, sessile, lanceolate to oblanceolate, mostly entire, the terminal leaflet considerably larger, 2-3.5 cm. long, few-toothed.


Inflorescence of bractless, few-flowered racemes, the pedicles spreading-ascending, 1-2 cm. long; sepals 4, 3-4.5 mm. long; petals 4, white, 8-11 mm. long; stamens 6; style 4-6 mm. long.


Siliques spreading to erect, 2-4 cm. long and about 1.5 mm. broad.

Accepted Name:
Cardamine penduliflora O.E. Schulz
Publication: Bot. Jahrb. Syst. 32: 538. 1903.

Synonyms & Misapplications:
(none provided)
Additional Resources:

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

WA Flora Checklist: Cardamine penduliflora checklist entry.

E-Flora BC: Cardamine penduliflora atlas page.

CalPhotos: Cardamine penduliflora photos.

USDA Plants: Cardamine penduliflora information.

12 photographs:
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