Cirsium texanumBuckley

Texas Thistle

WFO wfo-0000128346 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Cirsium texanum, photographed by Annika Lindqvist
fig. a Annika Lindqvist, CC BY 4.0 / 2022-05-09 / obs. 198441988
Cirsium texanum, photographed by Michelle W. （鍾偉瑋）
fig. b Michelle W. （鍾偉瑋）, CC BY 4.0 / obs. 191232294
Cirsium texanum, photographed by Jay Pruett
fig. c Jay Pruett, CC BY 4.0 / obs. 194467547
Cirsium texanum, photographed by Annika Lindqvist
fig. d Annika Lindqvist, CC BY 4.0 / obs. 194935258
Cirsium texanum, photographed by Haley Daniels
fig. e Haley Daniels, CC BY 4.0 / obs. 149696520
Cirsium texanum, photographed by Michelle W. （鍾偉瑋）
fig. f Michelle W. （鍾偉瑋）, CC BY 4.0 / obs. 190078882
Cirsium texanum, photographed by Laura Clark
fig. g Laura Clark, CC BY 4.0 / obs. 190974788
Cirsium texanum, photographed by Clifton Ladd, C.W.B.
fig. h Clifton Ladd, C.W.B., CC BY 4.0 / obs. 196626610

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 = 2,351 observations

Peak flowering in May, from 2,351 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 5 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.

  • Cirsium austrinum E.D.Schulz
  • Cirsium helleri (Small) Cory
  • Cirsium ochrocentrum var. helleri Petr.
  • Cirsium texanum var. stenolepis Shinners
  • Cirsium texanum var. texanum

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.