Lophophora williamsii(Lem. ex Salm-Dyck) J.M.Coult.

Peyote

WFO wfo-0001287424 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Lophophora williamsii, photographed by Alan Rockefeller
fig. a Alan Rockefeller, CC BY 4.0 / 2022-04-12 / obs. 187898731
Lophophora williamsii, photographed by Alan Rockefeller
fig. b Alan Rockefeller, CC BY 4.0 / obs. 187841441
Lophophora williamsii, photographed by Alan Rockefeller
fig. c Alan Rockefeller, CC BY 4.0 / obs. 187826274
Lophophora williamsii, photographed by Alan Rockefeller
fig. d Alan Rockefeller, CC BY 4.0 / obs. 187826164
Lophophora williamsii, photographed by Alan Rockefeller
fig. e Alan Rockefeller, CC BY 4.0 / obs. 187841265
Lophophora williamsii, photographed by Alan Rockefeller
fig. f Alan Rockefeller, CC BY 4.0 / obs. 187829135
Lophophora williamsii, photographed by Francisco Martínez González
fig. g Francisco Martínez González, CC BY-SA 4.0 / obs. 191890886
Lophophora williamsii, photographed by Alan Rockefeller
fig. h Alan Rockefeller, CC BY 4.0 / obs. 187925986

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 = 130 observations

Peak flowering in Mar, from 130 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 33 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.

  • Anhalonium lewinii Henn.
  • Anhalonium williamsii (Lem. ex Salm-Dyck) C.F.Först.
  • Ariocarpus williamsii (Lem. ex Salm-Dyck) Voss
  • Echinocactus jourdanianus Rebut ex Maass
  • Echinocactus lewinii (Henn.) K.Schum.
  • Echinocactus lewisii (Henn.) K.Schum.
  • Echinocactus williamsii Lem. ex Salm-Dyck
  • Echinocactus williamsii var. anhaloninicus K.Schum.
  • Echinocactus williamsii var. luteus Rouhier
  • Echinocactus williamsii var. pellotinicus K.Schum.
  • Lophophora alberto-vojtechii Bohata, Myšák & Šnicer
  • Lophophora echinata Croizat
  • Lophophora echinata var. lutea (Rouhier) Croizat
  • Lophophora jourdaniana Haberm.
  • Lophophora lewinii (Henn.) C.H.Thomps.
  • Lophophora lutea (Rouhier) Backeb.
  • Lophophora lutea var. texana (Frič ex Kreuz.) Backeb.
  • Lophophora pentagona (Croizat) V.Gapon
  • Lophophora pluricostata (Croizat) V.Gapon
  • Lophophora williamsii subsp. grymii Halda, Kupčák & Sladk.
  • Lophophora williamsii var. cristata Houghton
  • Lophophora williamsii var. decipiens Croizat
  • Lophophora williamsii var. echinata (Croizat) Bravo
  • Lophophora williamsii var. heptagona Y.Itô

and 9 more.

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.