Pilosella onegensisNorrl.

WFO wfo-0000086027 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Pilosella onegensis, photographed by Dmitriy Bochkov
fig. a Dmitriy Bochkov, CC BY 4.0 / 2021-07-29 / obs. 157974550
Pilosella onegensis, photographed by Dmitriy Bochkov
fig. b Dmitriy Bochkov, CC BY 4.0 / obs. 91801734
Pilosella onegensis, photographed by Dmitriy Bochkov
fig. c Dmitriy Bochkov, CC BY 4.0 / obs. 91155019
Pilosella onegensis, photographed by Dmitriy Bochkov
fig. d Dmitriy Bochkov, CC BY 4.0 / obs. 83213561
Pilosella onegensis, photographed by Yurii Basov
fig. e Yurii Basov, CC BY 4.0 / obs. 81739137
Pilosella onegensis, photographed by Dmitriy Bochkov
fig. f Dmitriy Bochkov, CC BY 4.0 / obs. 81436938
Pilosella onegensis, photographed by Dmitriy Bochkov
fig. g Dmitriy Bochkov, CC BY 4.0 / obs. 79441755
Pilosella onegensis, photographed by Dmitriy Bochkov
fig. h Dmitriy Bochkov, CC BY 4.0 / obs. 90034902

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 24 botanical countries

Regions where Pilosella onegensis is native: Buryatiya, Irkutsk, Krasnoyarsk, Transcaucasus, Türkiye, West Siberia, Yakutiya, Austria, Baltic States, Belarus, Bulgaria, Central European Russia, Czechia-Slovakia, Denmark, East European Russia, Germany, Greece, Ireland, North European Russia, Northwest European Russia, NW. Balkan Pen., Poland, Romania, Ukraine BuryatiyaIrkutskKrasnoyarskTranscaucasusTürkiyeWest SiberiaYakutiyaAustriaBaltic StatesBelarusBulgariaCentral European RussiaCzechia-SlovakiaDenmarkEast European RussiaGermanyGreeceIrelandNorth European RussiaNorthwest European RussiaNW. Balkan Pen.PolandRomaniaUkraine
Native distribution of Pilosella onegensis, 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
Austria AUT EUROPE
Baltic States BLT
Belarus BLR
Bulgaria BUL
Central European Russia RUC
Czechia-Slovakia CZE
Denmark DEN
East European Russia RUE
Germany GER
Greece GRC
Ireland IRE
North European Russia RUN
Northwest European Russia RUW
NW. Balkan Pen. YUG
Poland POL
Romania ROM
Ukraine UKR
Buryatiya BRY ASIA-TEMPERATE
Irkutsk IRK
Krasnoyarsk KRA
Transcaucasus TCS
Türkiye TUR
West Siberia WSB
Yakutiya YAK

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.

Where it actually grows measured, from 409 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -17.0 °C -11.0 °C -8.1 °C
Warmest month, mean daily high 21.3 °C 22.7 °C 23.9 °C
Annual rainfall 545 mm 667 mm 747 mm
Rainfall in the driest quarter 76 mm 106 mm 122 mm

It is found where winters are severely cold. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 409 research-grade observations of Pilosella onegensis 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.

Also published as 24 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.

  • Hieracium amaurochlorellum Üksip
  • Hieracium amaurochlorum (Zahn) Czerep.
  • Hieracium caespitosum subsp. brevipilum (Nägeli & Peter) P.D.Sell
  • Hieracium caespitosum subsp. glaucochroum
  • Hieracium caespitosum subsp. silvicola (Fr.) Borza
  • Hieracium collinum subsp. brevipilum Nägeli & Peter
  • Hieracium collinum subsp. glaucochroum Nägeli & Peter
  • Hieracium glaucochroum (Nägeli & Peter) Czerep.
  • Hieracium onegense (Norrl.) Norrl.
  • Hieracium polonicum Błocki
  • Hieracium pratense subsp. amaurochlorellum Zahn
  • Hieracium pratense subsp. amaurochlorum Zahn
  • Hieracium pratense subsp. brevipilum Nägeli & Peter
  • Hieracium pratense subsp. centrobosnicum K.Malý & Zahn
  • Hieracium pratense subsp. centrorossicum Zahn
  • Hieracium pratense subsp. eusilvicola
  • Hieracium pratense subsp. glaucochroum (Nägeli & Peter) Zahn
  • Hieracium pratense subsp. silvicola (Fr.) Zahn
  • Hieracium pratense var. silvicola Fr.
  • Pilosella amaurochlora (Zahn) Schljakov
  • Pilosella caespitosa subsp. brevipila (Nägeli & Peter) P.D.Sell & C.West
  • Pilosella glaucochroa (Nägeli & Peter) Schljakov
  • Pilosella onegensis subsp. glaucochroa (Nägeli & Peter) Soják
  • Pilosella onegensis subsp. onegensis

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.