Oenothera laciniataHill

cutleaf evening primrose

WFO wfo-0000389445 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Oenothera laciniata, photographed by saltyhiker
fig. a saltyhiker, CC BY 4.0 / 2022-06-01 / obs. 202670218
Oenothera laciniata, photographed by 雲一百香果
fig. b 雲一百香果, CC BY 4.0 / obs. 205109330
Oenothera laciniata, photographed by 雲一百香果
fig. c 雲一百香果, CC BY 4.0 / obs. 202847678
Oenothera laciniata, photographed by Sam Kieschnick
fig. d Sam Kieschnick, CC BY 4.0 / obs. 200740437
Oenothera laciniata, photographed by Tyler Bishop
fig. e Tyler Bishop, CC BY 4.0 / obs. 199028200
Oenothera laciniata, photographed by hi
fig. f hi, CC BY 4.0 / obs. 199535974
Oenothera laciniata, photographed by hi
fig. g hi, CC BY 4.0 / obs. 199534138
Oenothera laciniata, photographed by mularo1
fig. h mularo1, CC0 1.0 / obs. 200155288

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 = 1,723 observations

Peak flowering in Apr, from 1,723 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 9 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.

  • Oenothera laciniata var. laciniata
  • Oenothera laciniata var. typica Munz
  • Oenothera minima Pursh
  • Oenothera repanda Medik.
  • Oenothera sinuata L.
  • Oenothera sinuata subvar. helleriana H.Lév.
  • Oenothera viscosa Raf.
  • Onagra sinuata (L.) Moench
  • Raimannia laciniata (Hill) Rose ex Britton & A.Br.

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.