Youngia japonica(L.) DC.

Oriental false hawksbeard

WFO wfo-0000021604 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Youngia japonica, photographed by Greg Tasney
fig. a Greg Tasney, CC BY-SA 4.0 / 2022-06-05 / obs. 203455452
Youngia japonica, photographed by ALLIE BORGMEYER
fig. b ALLIE BORGMEYER, CC BY 4.0 / obs. 203871046
Youngia japonica, photographed by 何小花
fig. c 何小花, CC BY 4.0 / obs. 199591291
Youngia japonica, photographed by Tyler Bishop
fig. d Tyler Bishop, CC BY 4.0 / obs. 199508000
Youngia japonica, photographed by Tyler Bishop
fig. e Tyler Bishop, CC BY 4.0 / obs. 200544330
Youngia japonica, photographed by Josiah Londerée
fig. f Josiah Londerée, CC BY 4.0 / obs. 198385455
Youngia japonica, photographed by mefisher
fig. g mefisher, CC0 1.0 / obs. 198342883
Youngia japonica, photographed by lejones417
fig. h lejones417, CC BY-SA 4.0 / obs. 198168551

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.

Flowering n = 2,978 observations

Peak flowering in Apr, from 2,978 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 49 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.

  • Chondrilla japonica (L.) Lam.
  • Chondrilla lyrata (Houtt.) Poir.
  • Chondrilla multiflora (Thunb.) Poir.
  • Chondrilla runcinata Wall.
  • Crepis formosana Hayata
  • Crepis japonica (L.) Benth.
  • Crepis japonica f. japonica
  • Crepis japonica subsp. japonica
  • Crepis japonica subsp. longiflora (Babc. & Stebbins) Hand.-Mazz.
  • Crepis japonica var. elstonii Hochr.
  • Crepis japonica var. genuina Hochr.
  • Crepis japonica var. japonica
  • Crepis lyrata (Thunb.) C.B.Clarke
  • Crepis lyrata (Houtt.) Benth. & Hook.f.
  • Crepis taquetii H.Lév.
  • Ixeris lyrata (Houtt.) Miq.
  • Lactuca microsperma K.Schum.
  • Lactuca pseudosenecio Vaniot
  • Lactuca taquetii H.Lév. & Vaniot
  • Lactuca taraxacum H.Lév. & Vaniot
  • Prenanthella japonica L.
  • Prenanthes fastigiata Blume
  • Prenanthes japonica L.
  • Prenanthes lyrata Thunb.

and 25 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.