Rorippa columbiae(S.Watson) Howell

Columbian yellowcress

WFO wfo-0001216754 Accepted WFO 2026-06 3 photographs CC BY

Plate 1 figs. a–c · 1 observation

This species has been photographed under an open licence only 1 time, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Rorippa columbiae, photographed by Jeffrey Lee (he/him/his)
fig. a Jeffrey Lee (he/him/his), CC BY 4.0 / 2018-09-07 / obs. 24566614
Rorippa columbiae, photographed by Jeffrey Lee (he/him/his)
fig. b Jeffrey Lee (he/him/his), CC BY 4.0 / obs. 24566618
Rorippa columbiae, photographed by Jeffrey Lee (he/him/his)
fig. c Jeffrey Lee (he/him/his), CC BY 4.0 / obs. 24566609

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Also published as 6 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Nasturtium columbiae (S.Watson) Suksd.
  • Nasturtium sinuatum var. columbiae S.Watson
  • Nasturtium sinuatum var. pubescens S.Watson
  • Radicula columbiae (S.Watson) Greene
  • Rorippa calycina var. columbiae (S.Watson) Rollins
  • Rorippa sinuata var. pubescens (S.Watson) Howell

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite. It has no native range either: Kew's checklist does not cover this taxon.