Thalictrum simplexL.

WFO wfo-0000454093 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Thalictrum simplex, photographed by Yurii Basov
fig. a Yurii Basov, CC BY 4.0 / 2022-06-10 / obs. 204874921

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 54 botanical countries

Regions where Thalictrum simplex is native: Altay, Amur, Buryatiya, China North-Central, China South-Central, Chita, Inner Mongolia, Iran, Irkutsk, Japan, Kazakhstan, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Magadan, Manchuria, Mongolia, North Caucasus, Primorye, Qinghai, Transcaucasus, Türkiye, Tuva, Uzbekistan, West Siberia, Xinjiang, Yakutiya, Albania, Austria, Baltic States, Belarus, Bulgaria, Central European Russia, Czechia-Slovakia, Denmark, East European Russia, Finland, France, Germany, Greece, Hungary, Italy, Krym, North European Russia, Northwest European Russia, Norway, NW. Balkan Pen., Poland, Romania, South European Russia, Sweden, Switzerland, Ukraine AltayAmurBuryatiyaChina North-CentralChina South-CentralChitaInner MongoliaIranIrkutskJapanKazakhstanKhabarovskKirgizstanKrasnoyarskMagadanManchuriaMongoliaNorth CaucasusPrimoryeQinghaiTranscaucasusTürkiyeTuvaUzbekistanWest SiberiaXinjiangYakutiyaAlbaniaAustriaBaltic StatesBelarusBulgariaCentral European RussiaCzechia-SlovakiaDenmarkEast European RussiaFinlandFranceGermanyGreeceHungaryItalyKrymNorth European RussiaNorthwest European RussiaNorwayNW. Balkan Pen.PolandRomaniaSouth European RussiaSwedenSwitzerlandUkraine Korea
Native distribution of Thalictrum simplex, 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
Altay ALT ASIA-TEMPERATE
Amur AMU
Buryatiya BRY
China North-Central CHN
China South-Central CHC
Chita CTA
Inner Mongolia CHI
Iran IRN
Irkutsk IRK
Japan JAP
Kazakhstan KAZ
Khabarovsk KHA
Kirgizstan KGZ
Korea KOR
Krasnoyarsk KRA
Magadan MAG
Manchuria CHM
Mongolia MON
North Caucasus NCS
Primorye PRM
Qinghai CHQ
Transcaucasus TCS
Türkiye TUR
Tuva TVA
Uzbekistan UZB
West Siberia WSB
Xinjiang CHX
Yakutiya YAK
Albania ALB EUROPE
Austria AUT
Baltic States BLT
Belarus BLR
Bulgaria BUL
Central European Russia RUC
Czechia-Slovakia CZE
Denmark DEN
East European Russia RUE
Finland FIN
France FRA
Germany GER
Greece GRC
Hungary HUN
Italy ITA
Krym KRY
North European Russia RUN
Northwest European Russia RUW
Norway NOR
NW. Balkan Pen. YUG
Poland POL
Romania ROM
South European Russia RUS
Sweden SWE
Switzerland SWI
Ukraine UKR

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 35 in flower of 62 examined

Proportion of examined Thalictrum simplex in flower, by month
Month In flower Examined Share 95% interval
Jan 0 0 too few examined
Feb 0 0 too few examined
Mar 0 0 too few examined
Apr 0 0 too few examined
May 0 0 too few examined
Jun 14 19 74% 51% to 88%
Jul 21 28 75% 57% to 87%
Aug 0 8 0% 0% to 32%
Sep 0 5 0% 0% to 43%
Oct 0 2 too few examined
Nov 0 0 too few examined
Dec 0 0 too few examined

Peak flowering in Jul. Each bar is the share of Thalictrum simplex 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. 35 of 62 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 8 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 39 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 affine Jord.
  • Thalictrum affine Ledeb.
  • Thalictrum amurense Maxim.
  • Thalictrum angustifolium var. galioides DC.
  • Thalictrum axilliflorum Schur
  • Thalictrum bauhini Crantz
  • Thalictrum boreale F.Nyl.
  • Thalictrum catalaunicum Pau
  • Thalictrum columnare (Costa) Sennen
  • Thalictrum confertiflorum C.A.Mey. ex Trautv.
  • Thalictrum dubium Schumach.
  • Thalictrum exaltatum C.A.Mey.
  • Thalictrum flavum subsp. simplex (L.) O.Bolòs & Vigo
  • Thalictrum galioides (DC.) Pers.
  • Thalictrum gallicum Rouy & Foucaud
  • Thalictrum jordanianum F.W.Schultz
  • Thalictrum lacerostipellatum K.Koch & C.D.Bouché
  • Thalictrum laetum Jord.
  • Thalictrum laserpitiifolium Willd.
  • Thalictrum leyi Loehr
  • Thalictrum lugdunense Rouy & Foucaud
  • Thalictrum mazandaranicum Pakravan & Assadi
  • Thalictrum nitidulum Jord.
  • Thalictrum parisiense Jord.

and 15 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.
  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.