Thalictrum dasycarpumFisch., C.A.Mey. & Avé-Lall.

purple meadow-rue

WFO wfo-0000453968 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Thalictrum dasycarpum, photographed by Mary Krieger
fig. a Mary Krieger, CC BY 4.0 / 2022-05-27 / obs. 201213369
Thalictrum dasycarpum, photographed by Mary Krieger
fig. b Mary Krieger, CC BY 4.0 / obs. 197491353
Thalictrum dasycarpum, photographed by Mary Krieger
fig. c Mary Krieger, CC BY 4.0 / obs. 156249994
Thalictrum dasycarpum, photographed by Mary Krieger
fig. d Mary Krieger, CC BY 4.0 / obs. 153656143
Thalictrum dasycarpum, photographed by Mary Krieger
fig. e Mary Krieger, CC BY 4.0 / obs. 149676965
Thalictrum dasycarpum, photographed by Mary Krieger
fig. f Mary Krieger, CC BY 4.0 / obs. 141469883
Thalictrum dasycarpum, photographed by Mary Krieger
fig. g Mary Krieger, CC BY 4.0 / obs. 139664452
Thalictrum dasycarpum, photographed by Jason Swanson
fig. h Jason Swanson, CC0 1.0 / obs. 140801742

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 36 botanical countries

Regions where Thalictrum dasycarpum is native: Alabama, Alberta, Arizona, Arkansas, British Columbia, Colorado, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Manitoba, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Mexico, New York, North Dakota, Ohio, Oklahoma, Ontario, Pennsylvania, Québec, Saskatchewan, South Dakota, Tennessee, Texas, Utah, Wisconsin, Wyoming, Yukon AlabamaAlbertaArizonaArkansasBritish ColumbiaColoradoIdahoIllinoisIndianaIowaKansasKentuckyLouisianaManitobaMichiganMinnesotaMississippiMissouriMontanaNebraskaNew MexicoNew YorkNorth DakotaOhioOklahomaOntarioPennsylvaniaQuébecSaskatchewanSouth DakotaTennesseeTexasUtahWisconsinWyomingYukon
Native distribution of Thalictrum dasycarpum, 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
Alabama ALA NORTHERN AMERICA
Alberta ABT
Arizona ARI
Arkansas ARK
British Columbia BRC
Colorado COL
Idaho IDA
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Louisiana LOU
Manitoba MAN
Michigan MIC
Minnesota MIN
Mississippi MSI
Missouri MSO
Montana MNT
Nebraska NEB
New Mexico NWM
New York NWY
North Dakota NDA
Ohio OHI
Oklahoma OKL
Ontario ONT
Pennsylvania PEN
Québec QUE
Saskatchewan SAS
South Dakota SDA
Tennessee TEN
Texas TEX
Utah UTA
Wisconsin WIS
Wyoming WYO
Yukon YUK

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.

Flowering 232 in flower of 370 examined

Peak flowering in Jul. Each bar is the share of Thalictrum dasycarpum observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 232 of 370 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 4 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 11 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.

  • Leucocoma dasycarpa (Fisch. & Avé-Lall.) Nieuwl.
  • Thalictrum albens Greene
  • Thalictrum dasycarpum f. hypoglaucum (Rydb.) Steyerm.
  • Thalictrum dasycarpum var. dasycarpum
  • Thalictrum dasycarpum var. hypoglaucum (Rydb.) B.Boivin
  • Thalictrum hypoglaucum Rydb.
  • Thalictrum nortonii Greene
  • Thalictrum perpensum Greene
  • Thalictrum purpurascens var. dasycarpum (Fisch. & Avé-Lall.) Trel.
  • Thalictrum rugosum var. umbelliferum DC.
  • Thalictrum wightianum Greene

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.