Euphorbia dentataMichx.

green poinsettia

WFO wfo-0000961708 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Euphorbia dentata, photographed by ozarkallison
fig. a ozarkallison, CC0 1.0 / 2021-10-02 / obs. 161085354
Euphorbia dentata, photographed by Annika Lindqvist
fig. b Annika Lindqvist, CC BY 4.0 / obs. 195345472
Euphorbia dentata, photographed by saltyhiker
fig. c saltyhiker, CC BY 4.0 / obs. 166701463
Euphorbia dentata, photographed by Morgan Hay
fig. d Morgan Hay, CC BY 4.0 / obs. 191697761
Euphorbia dentata, photographed by Blake Bringhurst
fig. e Blake Bringhurst, CC BY 4.0 / obs. 155498791
Euphorbia dentata, photographed by Clay
fig. f Clay, CC BY 4.0 / obs. 156501026
Euphorbia dentata, photographed by Annika Lindqvist
fig. g Annika Lindqvist, CC BY 4.0 / obs. 162353346
Euphorbia dentata, photographed by Annika Lindqvist
fig. h Annika Lindqvist, CC BY 4.0 / obs. 156107514

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 = 291 observations

Peak flowering in Sep, from 291 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.

  • Anisophyllum dentatum (Michx.) Haw.
  • Euphorbia aureocincta Croizat
  • Euphorbia dentata f. dentata
  • Euphorbia dentata var. linearis Engelm. ex Boiss.
  • Euphorbia dentata var. rigida Engelm. ex Torr.
  • Euphorbia fontanesii Steud.
  • Euphorbia herronii Riddell
  • Euphorbia purpureomaculata T.J.Feng & J.X.Huang
  • Poinsettia dentata (Michx.) Klotzsch & Garcke

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.