Campanula glomerataL.

Clustered BellflowerDane's BloodDane's bloodclustered bellflower

WFO wfo-0000827269 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Campanula glomerata, photographed by Aleksei Baushev
fig. a Aleksei Baushev, CC BY 4.0 / 2022-06-11 / obs. 205255103

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.

The specimen a real sheet, in a real collection

Herbarium
The New York Botanical Garden
Accession
3738620
Filed as
Campanula glomerata L.
Det. by
not recorded on this sheet
Collected
R. D. Dorn 2006-08-22
Origin
US
The sheet
View the digitised specimen (CC BY 4.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 57 botanical countries

Regions where Campanula glomerata is native: Altay, Amur, Buryatiya, Chita, Inner Mongolia, Iran, Iraq, Irkutsk, Japan, Kazakhstan, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Lebanon-Syria, Manchuria, Mongolia, North Caucasus, Primorye, Sakhalin, Tadzhikistan, Transcaucasus, Türkiye, Tuva, Uzbekistan, West Siberia, Xinjiang, Yakutiya, Albania, Austria, Baltic States, Belarus, Belgium, Bulgaria, Central European Russia, Czechia-Slovakia, Denmark, East European Russia, Finland, France, Germany, Great Britain, Greece, Hungary, Italy, Krym, Netherlands, North European Russia, Northwest European Russia, NW. Balkan Pen., Poland, Romania, South European Russia, Spain, Sweden, Switzerland, Ukraine AltayAmurBuryatiyaChitaInner MongoliaIranIraqIrkutskJapanKazakhstanKhabarovskKirgizstanKrasnoyarskLebanon-SyriaManchuriaMongoliaNorth CaucasusPrimoryeSakhalinTadzhikistanTranscaucasusTürkiyeTuvaUzbekistanWest SiberiaXinjiangYakutiyaAlbaniaAustriaBaltic StatesBelarusBelgiumBulgariaCentral European RussiaCzechia-SlovakiaDenmarkEast European RussiaFinlandFranceGermanyGreeceHungaryItalyKrymNetherlandsNorth European RussiaNorthwest European RussiaNW. Balkan Pen.PolandRomaniaSouth European RussiaSpainSwedenSwitzerlandUkraine Korea
Native distribution of Campanula glomerata, 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
Albania ALB EUROPE
Austria AUT
Baltic States BLT
Belarus BLR
Belgium BGM
Bulgaria BUL
Central European Russia RUC
Czechia-Slovakia CZE
Denmark DEN
East European Russia RUE
Finland FIN
France FRA
Germany GER
Great Britain GRB
Greece GRC
Hungary HUN
Italy ITA
Krym KRY
Netherlands NET
North European Russia RUN
Northwest European Russia RUW
NW. Balkan Pen. YUG
Poland POL
Romania ROM
South European Russia RUS
Spain SPA
Sweden SWE
Switzerland SWI
Ukraine UKR
Altay ALT ASIA-TEMPERATE
Amur AMU
Buryatiya BRY
Chita CTA
Inner Mongolia CHI
Iran IRN
Iraq IRQ
Irkutsk IRK
Japan JAP
Kazakhstan KAZ
Khabarovsk KHA
Kirgizstan KGZ
Korea KOR
Krasnoyarsk KRA
Lebanon-Syria LBS
Manchuria CHM
Mongolia MON
North Caucasus NCS
Primorye PRM
Sakhalin SAK
Tadzhikistan TZK
Transcaucasus TCS
Türkiye TUR
Tuva TVA
Uzbekistan UZB
West Siberia WSB
Xinjiang CHX
Yakutiya YAK

Not drawn on the map: Great Britain. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

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 1,596 in flower of 1,627 examined

Proportion of examined Campanula glomerata in flower, by month
Month In flower Examined Share 95% interval
Jan 2 2 too few examined
Feb 1 1 too few examined
Mar 2 2 too few examined
Apr 11 13 85% 58% to 96%
May 101 105 96% 91% to 99%
Jun 404 410 99% 97% to 99%
Jul 743 753 99% 98% to 99%
Aug 205 209 98% 95% to 99%
Sep 63 63 100% 94% to 100%
Oct 42 47 89% 77% to 95%
Nov 20 20 100% 84% to 100%
Dec 2 2 too few examined

Peak flowering in Sep. Each bar is the share of Campanula glomerata 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. 1,596 of 1,627 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.

Where it actually grows measured, from 1,974 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -25.5 °C -10.2 °C 1.2 °C
Warmest month, mean daily high 17.7 °C 22.5 °C 25.9 °C
Annual rainfall 433 mm 705 mm 1,638 mm
Rainfall in the driest quarter 33 mm 111 mm 296 mm

It is found where winters are arctic. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,974 research-grade observations of Campanula glomerata that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 99 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.

  • Campanula aggregata Willd.
  • Campanula asperifolia Hayek ex Rech.f.
  • Campanula barbata Spreng.
  • Campanula betonicifolia Gilib.
  • Campanula cephalantha Fisch. ex A.DC.
  • Campanula cephalotes Fisch. ex Schrank
  • Campanula cephalotes Fisch. ex Fed.
  • Campanula cephalotes f. alba Nakai
  • Campanula cephalotes var. canescens Nakai
  • Campanula cervicarioides Roem. & Schult.
  • Campanula congesta Roem. & Schult.
  • Campanula conglomerata Gueldenst. ex Ledeb.
  • Campanula desertorum Weinm.
  • Campanula elliptica Kit.
  • Campanula eo-cervicaria Nábělek
  • Campanula eocervicaria Nábĕlek
  • Campanula farinosa Andrz. ex Besser
  • Campanula glaucophylla Schloss. & Vuk.
  • Campanula glomerata f. aggregata (Willd.) Voss
  • Campanula glomerata f. alba (Nakai) U.C.La
  • Campanula glomerata f. canescens (Nakai) Kitag.
  • Campanula glomerata f. glaucophylla (Schloss. & Vuk.) Hayek & Hegi
  • Campanula glomerata f. hispida Witasek
  • Campanula glomerata f. polessica (O.D.Wissjul.) Soó

and 75 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. 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.