Ferocactus wislizeni(Engelm.) Britton & Rose

fishhook barrel cactus

WFO wfo-0000686390 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Ferocactus wislizeni, photographed by er-birds
fig. a er-birds, CC BY 4.0 / 2022-05-02 / obs. 196808268
Ferocactus wislizeni, photographed by CK2AZ
fig. b CK2AZ, CC BY 4.0 / obs. 195008787
Ferocactus wislizeni, photographed by CK2AZ
fig. c CK2AZ, CC BY 4.0 / obs. 195008959
Ferocactus wislizeni, photographed by sprcrkwild
fig. d sprcrkwild, CC BY 4.0 / obs. 200362135
Ferocactus wislizeni, photographed by CK2AZ
fig. e CK2AZ, CC BY 4.0 / obs. 187526410
Ferocactus wislizeni, photographed by CK2AZ
fig. f CK2AZ, CC BY 4.0 / obs. 188501215
Ferocactus wislizeni, photographed by CK2AZ
fig. g CK2AZ, CC BY 4.0 / obs. 187436332
Ferocactus wislizeni, photographed by Benjamin Burgunder
fig. h Benjamin Burgunder, CC BY 4.0 / obs. 185966428

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 = 407 observations

Peak flowering in Aug, from 407 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 17 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.

  • Echinocactus arizonicus R.E.Kunze
  • Echinocactus falconeri Orcutt
  • Echinocactus wislizeni Engelm.
  • Echinocactus wislizeni f. albispinus (Toumey) Schelle
  • Echinocactus wislizeni f. phoeniceus (R.E.Kunze) Schelle
  • Echinocactus wislizeni var. albispinus Toumey
  • Echinocactus wislizeni var. decipiens Engelm.
  • Echinocactus wislizeni var. phoeniceus R.E.Kunze
  • Ferocactus arizonicus (R.E.Kunze) Orcutt
  • Ferocactus falconeri (Orcutt) Orcutt
  • Ferocactus phoeniceus (R.E.Kunze) Orcutt
  • Ferocactus wislizeni subsp. ajoensis Fencl & Kalas
  • Ferocactus wislizeni var. ajoensis Fencl & Kalas
  • Ferocactus wislizeni var. albispinus (Toumey) Y.Itô
  • Ferocactus wislizeni var. falconeri (Orcutt) Y.Itô
  • Ferocactus wislizeni var. phoeniceus (R.E.Kunze) Y.Itô
  • Ferocactus wislizeni var. wislizeni

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.