Synurus deltoides(Aiton) Nakai

deltoid synurus

WFO wfo-0000022347 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Synurus deltoides, photographed by Nina Filippova
fig. a Nina Filippova, CC BY 4.0 / 2021-08-27 / obs. 153469128
Synurus deltoides, photographed by Junichi　Mandai
fig. b Junichi　Mandai, CC BY 4.0 / obs. 150611522
Synurus deltoides, photographed by Repina Tatyana
fig. c Repina Tatyana, CC BY 4.0 / obs. 93395008
Synurus deltoides, photographed by Repina Tatyana
fig. d Repina Tatyana, CC BY 4.0 / obs. 46356544
Synurus deltoides, photographed by Repina Tatyana
fig. e Repina Tatyana, CC BY 4.0 / obs. 45825938
Synurus deltoides, photographed by Viola Alekseeva
fig. f Viola Alekseeva, CC0 1.0 / obs. 194568930
Synurus deltoides, photographed by WATANABE Hitoshi 渡辺仁
fig. g WATANABE Hitoshi 渡辺仁, CC BY 4.0 / obs. 101348302
Synurus deltoides, photographed by Анна Васильченко
fig. h Анна Васильченко, CC BY 4.0 / obs. 132524189

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.

Native range 14 botanical countries

Regions where Synurus deltoides is native: Amur, Buryatiya, China North-Central, China South-Central, China Southeast, Chita, Inner Mongolia, Japan, Khabarovsk, Korea, Manchuria, Mongolia, Primorye, Sakhalin AmurBuryatiyaChina North-CentralChina South-CentralChina SoutheastChitaInner MongoliaJapanKhabarovskManchuriaMongoliaPrimoryeSakhalin Korea
Native distribution of Synurus deltoides, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Amur AMU ASIA-TEMPERATE
Buryatiya BRY
China North-Central CHN
China South-Central CHC
China Southeast CHS
Chita CTA
Inner Mongolia CHI
Japan JAP
Khabarovsk KHA
Korea KOR
Manchuria CHM
Mongolia MON
Primorye PRM
Sakhalin SAK

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 17 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.

  • Carduus atriplicifolius Fisch. ex Trevir.
  • Carduus atriplicifolius Fisch. ex Hornem.
  • Centaurea atriplicifolia Matsum.
  • Cirsium atriplicifolium Fisch. ex Steud.
  • Cirsium ficifolium Fisch.
  • Onopordum deltoides Aiton
  • Rhaponticum atriplicifolium DC.
  • Serratula atriplicifolia var. atriplicifolia
  • Serratula atriplicifolia var. incisolobata Miyabe & Miyabe
  • Serratula deltoides (Aiton) Makino
  • Serratula deltoides var. deltoides
  • Serratula pungens Franch. & Sav.
  • Silybum atriplicifolium Fisch.
  • Stephanocoma atriplicifolia (Trevis.) Turcz. ex Ledeb.
  • Synurus deltoides f. deltoides
  • Synurus deltoides var. deltoides
  • Synurus deltoides var. incisolobatus Kitam.

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.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

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.