Page author: David Giblin
Rorippa palustris ssp. palustris
marsh yellowcress

Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.

Habitat: Wet ground at low elevations.

Flowers: June-October

Origin: Native

Conservation Status: Not of concern


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Accepted Name:
Rorippa palustris (L.) Besser ssp. palustris

Synonyms & Misapplications:
Rorippa islandica (Oeder ex Murray) Borbás var. glabrata (Lunell) Butters & Abbe [HC]
Rorippa islandica (Oeder ex Murray) Borbás var. islandica, misapplied [HC]
Rorippa islandica (Oeder ex Murray) Borbás var. occidentale (Wats.) Butters & Abbe, orthographic variant [HC]
Rorippa islandica (Oeder ex Murray) Borbás var. occidentalis (S. Watson) Butters & Abbe
Rorippa palustris (L.) Besser ssp. fernaldiana (Butters & Abbe) Jonsell [KZ99]
Rorippa palustris (L.) Besser ssp. occidentalis (S. Watson) Abrams [KZ99]
Rorippa palustris (L.) Besser var. fernaldiana (Butters & Abbe) Stuckey [Rollins 1993a]
Rorippa palustris (L.) Besser var. occidentalis (S. Watson) Rollins [JPM]
Additional Resources:

PNW Herbaria: Specimen records of Rorippa palustris ssp. palustris in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Rorippa palustris ssp. palustris checklist entry.

E-Flora BC: Rorippa palustris ssp. palustris atlas page.

CalPhotos: Rorippa palustris ssp. palustris photos.

USDA Plants: Rorippa palustris ssp. palustris information.

5 photographs:
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