Linum rigidumPursh

Yellow Flax

WFO wfo-0001073476 Accepted WFO 2026-06 7 photographs CC0 / CC BY

Plate 1 figs. a–g

Linum rigidum, photographed by Thomas Koffel
fig. a Thomas Koffel, CC BY 4.0 / 2021-06-12 / obs. 136273466
Linum rigidum, photographed by Cleveland Powell
fig. b Cleveland Powell, CC BY 4.0 / obs. 192695532
Linum rigidum, photographed by Cecelia Alexander
fig. c Cecelia Alexander, CC0 1.0 / obs. 172845328
Linum rigidum, photographed by Cody Stricker
fig. d Cody Stricker, CC BY 4.0 / obs. 76910050
Linum rigidum, photographed by Roz Hunter
fig. e Roz Hunter, CC BY 4.0 / obs. 123259800
Linum rigidum, photographed by tcantrell52
fig. f tcantrell52, CC BY 4.0 / obs. 62893722
Linum rigidum, photographed by Cleveland Powell
fig. g Cleveland Powell, CC BY 4.0 / obs. 69648294

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 = 131 observations

Peak flowering in Apr, from 131 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 6 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.

  • Cathartolinum earlei Small
  • Cathartolinum rigidum (Pursh) Small
  • Linum earlei (Small) H.J.P.Winkl.
  • Linum rigidum var. tenerrimum Blank.
  • Mesynium rigidum (Pursh) Á.Löve & D.Löve
  • Nezera rigida (Pursh) Nieuwl.

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.