Thalictrum polycarpum(Torr.) S.Watson

WFO wfo-0001129470 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Thalictrum polycarpum, photographed by Dee Shea Himes
fig. a Dee Shea Himes, CC BY 4.0 / 2021-04-11 / obs. 120374630
Thalictrum polycarpum, photographed by Gail A Baker
fig. b Gail A Baker, CC BY 4.0 / obs. 37323516
Thalictrum polycarpum, photographed by Daniel Kennedy
fig. c Daniel Kennedy, CC BY 4.0 / obs. 191996800
Thalictrum polycarpum, photographed by Cricket Raspet
fig. d Cricket Raspet, CC BY 4.0 / obs. 190811516
Thalictrum polycarpum, photographed by Daniel Kennedy
fig. e Daniel Kennedy, CC BY 4.0 / obs. 186445608
Thalictrum polycarpum, photographed by Nicholas Wei
fig. f Nicholas Wei, CC BY-SA 4.0 / obs. 174580082
Thalictrum polycarpum, photographed by Dee Shea Himes
fig. g Dee Shea Himes, CC BY 4.0 / obs. 115919455
Thalictrum polycarpum, photographed by lemonsnapp
fig. h lemonsnapp, CC BY 4.0 / obs. 40710504

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 5 botanical countries

Regions where Thalictrum polycarpum is native: California, Mexico Northwest, Nevada, Oregon, Utah CaliforniaMexico NorthwestNevadaOregonUtah
Native distribution of Thalictrum polycarpum, 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.
RegionTDWG codeContinent
California CAL NORTHERN AMERICA
Mexico Northwest MXN
Nevada NEV
Oregon ORE
Utah UTA

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 16 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.

  • Thalictrum ametrum Greene
  • Thalictrum bernardinum Greene
  • Thalictrum caesium Greene
  • Thalictrum campylopodum Greene
  • Thalictrum coreospermum Greene
  • Thalictrum fendleri var. hesperium (Greene) Jeps.
  • Thalictrum fendleri var. polycarpum Torr.
  • Thalictrum hesperium Greene
  • Thalictrum laliusculum Greene
  • Thalictrum latiusculum Greene
  • Thalictrum lentiginosum Greene
  • Thalictrum magarum Greene
  • Thalictrum mendocinum Greene
  • Thalictrum papyraceum Greene
  • Thalictrum polycarpum var. caesium (Greene) Jeps.
  • Thalictrum polycarpum var. hesperium (Greene) Jeps.

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. 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.