Euphorbia prostrataAiton

prostrate sandmat

WFO wfo-0000964195 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Euphorbia prostrata, photographed by Elliott Gordon
fig. a Elliott Gordon, CC BY 4.0 / 2022-05-26 / obs. 200883946

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.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Flowering n = 550 observations

Flowering observations of Euphorbia prostrata by month
MonthObservations
Jan17
Feb15
Mar45
Apr64
May36
Jun51
Jul59
Aug86
Sep51
Oct70
Nov34
Dec22

Peak flowering in Aug, from 550 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 14 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 prostratum (Aiton) Haw.
  • Aplarina prostrata Raf.
  • Chamaesyce malaca Small
  • Chamaesyce prostrata (Aiton) Small
  • Chamaesyce villosior Millsp.
  • Euphorbia callitrichoides Kunth
  • Euphorbia malaca (Small) Little
  • Euphorbia perforata Guss.
  • Euphorbia prostrata var. caudirhiza Fosberg
  • Euphorbia prostrata var. vestita Engelm. ex Boiss.
  • Euphorbia ramosa var. villosior Greenm.
  • Euphorbia tenella Kunth
  • Euphorbia trichogona Bertol.
  • Tithymalus prostratus (Ait.) Samp.

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.