Oxalis violaceaL.

violet woodsorrel

WFO wfo-0001089484 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Oxalis violacea, photographed by Carol Ann McCormick
fig. a Carol Ann McCormick, CC BY 4.0 / 2022-05-30 / obs. 201878825
Oxalis violacea, photographed by Ryan Sorrells
fig. b Ryan Sorrells, CC BY 4.0 / obs. 199900179
Oxalis violacea, photographed by stephen
fig. c stephen, CC BY 4.0 / obs. 198002764
Oxalis violacea, photographed by Sandra Keller
fig. d Sandra Keller, CC BY 4.0 / obs. 199233482
Oxalis violacea, photographed by Anne Parker
fig. e Anne Parker, CC BY 4.0 / obs. 198440215
Oxalis violacea, photographed by Annie Weissman
fig. f Annie Weissman, CC BY 4.0 / obs. 197325021
Oxalis violacea, photographed by Katie Kucera
fig. g Katie Kucera, CC BY 4.0 / obs. 204119607
Oxalis violacea, photographed by mularo1
fig. h mularo1, CC0 1.0 / obs. 201369743

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.

Flowering n = 2,884 observations

Peak flowering in Apr, from 2,884 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 12 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.

  • Acetosella violacea (L.) Kuntze
  • Acetosella violacea var. rosea Kuntze
  • Ionoxalis violacea (L.) Small
  • Ionoxalis violacea var. trichophora (Fassett) Moldenke
  • Oxalis longiflora L.
  • Oxalis pulchella Salisb.
  • Oxalis violacea f. albida Fassett
  • Oxalis violacea f. violacea
  • Oxalis violacea var. trichophora Fassett
  • Oxalis violacea var. violacea
  • Sassia tinctoria Molina
  • Sassia violacea (L.) Holub

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.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.