Hypochaeris radicataL.

Common Cat's-ear

WFO wfo-0000074809 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Hypochaeris radicata, photographed by Daniel Cahen
fig. a Daniel Cahen, CC BY 4.0 / 2022-06-12 / obs. 205524618
Hypochaeris radicata, photographed by Sheelagh Halsey
fig. b Sheelagh Halsey, CC BY 4.0 / obs. 205558565
Hypochaeris radicata, photographed by Marc Riera
fig. c Marc Riera, CC BY 4.0 / obs. 203802042
Hypochaeris radicata, photographed by giantcicada
fig. d giantcicada, CC BY 4.0 / obs. 205818685
Hypochaeris radicata, photographed by Dominic Gentilcore
fig. e Dominic Gentilcore, CC BY 4.0 / obs. 204271885
Hypochaeris radicata, photographed by Pavel Kacl
fig. f Pavel Kacl, CC BY 4.0 / obs. 203181932
Hypochaeris radicata, photographed by Yann Kemper
fig. g Yann Kemper, CC0 1.0 / obs. 202774724
Hypochaeris radicata, photographed by Leanne Dempsey
fig. h Leanne Dempsey, CC BY 4.0 / obs. 203910877

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 = 5,159 observations

Peak flowering in Jun, from 5,159 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 31 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.

  • Achyrophorus radicatus (L.) Scop.
  • Achyrophorus taraxacifolius (Salzm.) Sch.Bip.
  • Apargia serotina Jan ex Steud.
  • Crepis molokaiensis H.Lév.
  • Hypochaeris gracilis Sennen
  • Hypochaeris infesta Salisb.
  • Hypochaeris lasiophylla K.Koch ex Nyman
  • Hypochaeris neapolitana DC.
  • Hypochaeris platylepis Boiss.
  • Hypochaeris radicata subsp. ericetorum Soest
  • Hypochaeris radicata subsp. heterocarpa (Moris) Arcang.
  • Hypochaeris radicata subsp. heterocarpa (Moris) Maire
  • Hypochaeris radicata var. brevis Murr
  • Hypochaeris radicata var. erostris Emb. & Maire
  • Hypochaeris radicata var. heterocarpa Moris
  • Hypochaeris radicata var. hispida Peterm.
  • Hypochaeris radicata var. neapolitana DC.
  • Hypochaeris radicata var. rostrata Moris
  • Hypochaeris radicata var. salina (Gren.) Rouy
  • Hypochaeris radicata var. subalpina (Schur) Nyár.
  • Hypochaeris runcinata Gilib.
  • Hypochaeris salina Gren.
  • Hypochaeris subalpina Schur
  • Hypochaeris taraxacifolia Loisel.

and 7 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.