Hylomecon japonica(Thunb.) Prantl

WFO wfo-0001090277 Accepted WFO 2026-06 4 photographs CC BY

Plate 1 figs. a–d · 2 observations

This species has been photographed under an open licence only 2 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Hylomecon japonica, photographed by WATANABE Hitoshi 渡辺仁
fig. a WATANABE Hitoshi 渡辺仁, CC BY 4.0 / 2021-04-10 / obs. 120627627
Hylomecon japonica, photographed by Repina Tatyana
fig. b Repina Tatyana, CC BY 4.0 / obs. 72035431
Hylomecon japonica, photographed by WATANABE Hitoshi 渡辺仁
fig. c WATANABE Hitoshi 渡辺仁, CC BY 4.0 / obs. 120627654
Hylomecon japonica, photographed by Repina Tatyana
fig. d Repina Tatyana, CC BY 4.0 / obs. 72036055

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.

Also published as 9 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.

  • Chelidonium japonicum Thunb.
  • Chelidonium uniflorum Siebold & Zucc.
  • Hylomecon dissecta (Fedde) Honda
  • Hylomecon hylomeconoides var. dissectifolia Y.N.Lee
  • Hylomecon japonica var. japonica
  • Hylomecon lanceolata (Yatabe) Honda
  • Stylophorum japonicum (Thunb.) Miq.
  • Stylophorum japonicum var. dissectum Franch. & Sav.
  • Stylophorum lanceolatum Yatabe

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 and no toxicity claim, because we do not yet have those from a source we can cite. It has no native range either: Kew's checklist does not cover this taxon.