Pilosella piloselloides(Vill.) Soják

tall hawkweed

WFO wfo-0000032468 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Pilosella piloselloides, photographed by Christian Berg
fig. a Christian Berg, CC BY 4.0 / 2022-05-13 / obs. 198314454

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
Smithsonian, US National Herbarium
Accession
US 1179363
Filed as
Pilosella piloselloides subsp. praealta (Gochnat) S.Bräut. & Greuter
Det. by
not recorded on this sheet
Collected
J. Bubela 1883-06-26
Origin
CZ
The sheet
View the digitised specimen (CC0 1.0)

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 33 botanical countries

Regions where Pilosella piloselloides is native: East Aegean Is., Iran, Iraq, Lebanon-Syria, North Caucasus, Transcaucasus, Türkiye, Albania, Austria, Baltic States, Belarus, Belgium, Bulgaria, Central European Russia, Corse, Czechia-Slovakia, Finland, France, Germany, Greece, Hungary, Italy, Krym, Netherlands, North European Russia, Northwest European Russia, NW. Balkan Pen., Poland, Romania, Sweden, Switzerland, Türkiye-in-Europe, Ukraine East Aegean Is.IranIraqLebanon-SyriaNorth CaucasusTranscaucasusTürkiyeAlbaniaAustriaBaltic StatesBelarusBelgiumBulgariaCentral European RussiaCorseCzechia-SlovakiaFinlandFranceGermanyGreeceHungaryItalyKrymNetherlandsNorth European RussiaNorthwest European RussiaNW. Balkan Pen.PolandRomaniaSwedenSwitzerlandTürkiye-in-EuropeUkraine
Native distribution of Pilosella piloselloides, 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
Albania ALB EUROPE
Austria AUT
Baltic States BLT
Belarus BLR
Belgium BGM
Bulgaria BUL
Central European Russia RUC
Corse COR
Czechia-Slovakia CZE
Finland FIN
France FRA
Germany GER
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
Sweden SWE
Switzerland SWI
Türkiye-in-Europe TUE
Ukraine UKR
East Aegean Is. EAI ASIA-TEMPERATE
Iran IRN
Iraq IRQ
Lebanon-Syria LBS
North Caucasus NCS
Transcaucasus TCS
Türkiye TUR

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 115 in flower of 137 examined

Proportion of examined Pilosella piloselloides in flower, by month
Month In flower Examined Share 95% interval
Jan 5 5 100% 57% to 100%
Feb 3 3 too few examined
Mar 0 0 too few examined
Apr 2 5 40% 12% to 77%
May 7 12 58% 32% to 81%
Jun 58 63 92% 83% to 97%
Jul 10 11 91% 62% to 98%
Aug 7 10 70% 40% to 89%
Sep 7 7 100% 65% to 100%
Oct 4 5 80% 38% to 96%
Nov 8 10 80% 49% to 94%
Dec 4 6 67% 30% to 90%

Peak flowering in Jan. Each bar is the share of Pilosella piloselloides 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. 115 of 137 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 2 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 584 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -18.5 °C -10.3 °C -1.3 °C
Warmest month, mean daily high 19.3 °C 24.1 °C 27.5 °C
Annual rainfall 612 mm 931 mm 1,573 mm
Rainfall in the driest quarter 82 mm 181 mm 320 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 584 research-grade observations of Pilosella piloselloides 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 221 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 almquistii (Nägeli & Peter) Prain
  • Hieracium aquilonare (N.P.) Zahn
  • Hieracium aquilonare (Nägeli & Peter) Üksip
  • Hieracium arvicola subsp. curvulum (Norrl.) Zahn
  • Hieracium astolonum Vuk.
  • Hieracium bajevii Velen.
  • Hieracium bauhini subsp. auropurpureoides Zahn
  • Hieracium bauhini subsp. rubrobauhini Schelk. & Zahn
  • Hieracium beerianum Prain
  • Hieracium coracodes (Norrl.) Norrl.
  • Hieracium curvulum Norrl.
  • Hieracium cylindriceps (Nägeli & Peter) Üksip
  • Hieracium dilutius (Rehmann) Czerep.
  • Hieracium dolinense (Rehmann) Czerep.
  • Hieracium ericetorum (Nägeli & Peter) Prain
  • Hieracium ericetorum (Nägeli & Peter) Üksip
  • Hieracium farreum Norrl.
  • Hieracium floccipedunculum (Nägeli & Peter) Prain
  • Hieracium floccipedunculum N.P.
  • Hieracium floccipedunculum (Nägeli & Peter) Üksip
  • Hieracium florentinum All.
  • Hieracium florentinum subsp. albidobracteum Nägeli & Peter
  • Hieracium florentinum subsp. albobracteolatum Lengyel & Zahn
  • Hieracium florentinum subsp. albulanum Nägeli & Peter

and 197 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. USDA PLANTS Database. common name, checklist symbol HIPI2. public domain. 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.