Hieracium sabaudumL.

New England hawkweed

WFO wfo-0000133436 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Hieracium sabaudum, photographed by Michael Andresek
fig. a Michael Andresek, CC BY 4.0 / 2021-10-17 / obs. 164515586
Hieracium sabaudum, photographed by Pavel Kacl
fig. b Pavel Kacl, CC BY 4.0 / obs. 161508373
Hieracium sabaudum, photographed by Pavel Kacl
fig. c Pavel Kacl, CC BY 4.0 / obs. 157298013
Hieracium sabaudum, photographed by Matteo Marcandella
fig. d Matteo Marcandella, CC BY 4.0 / obs. 156105103
Hieracium sabaudum, photographed by Matteo Marcandella
fig. e Matteo Marcandella, CC BY 4.0 / obs. 151370181
Hieracium sabaudum, photographed by Pavel Kacl
fig. f Pavel Kacl, CC BY 4.0 / obs. 145537424
Hieracium sabaudum, photographed by Pavel Kacl
fig. g Pavel Kacl, CC BY 4.0 / obs. 143430818
Hieracium sabaudum, photographed by Pavel Kacl
fig. h Pavel Kacl, CC BY 4.0 / obs. 92666845

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
05163949
Filed as
Hieracium sabaudum subsp. sublactucaceum Zahn
Det. by
not recorded on this sheet
Collected
not recorded
Origin
not recorded
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 30 botanical countries

Regions where Hieracium sabaudum is native: North Caucasus, Transcaucasus, Türkiye, Albania, Austria, Baltic States, Belgium, Bulgaria, Central European Russia, Corse, Czechia-Slovakia, Denmark, France, Germany, Great Britain, Greece, Hungary, Italy, Krym, Netherlands, Northwest European Russia, NW. Balkan Pen., Poland, Portugal, Romania, Spain, Sweden, Switzerland, Türkiye-in-Europe, Ukraine North CaucasusTranscaucasusTürkiyeAlbaniaAustriaBaltic StatesBelgiumBulgariaCentral European RussiaCorseCzechia-SlovakiaDenmarkFranceGermanyGreeceHungaryItalyKrymNetherlandsNorthwest European RussiaNW. Balkan Pen.PolandPortugalRomaniaSpainSwedenSwitzerlandTürkiye-in-EuropeUkraine
Native distribution of Hieracium sabaudum, 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
Belgium BGM
Bulgaria BUL
Central European Russia RUC
Corse COR
Czechia-Slovakia CZE
Denmark DEN
France FRA
Germany GER
Great Britain GRB
Greece GRC
Hungary HUN
Italy ITA
Krym KRY
Netherlands NET
Northwest European Russia RUW
NW. Balkan Pen. YUG
Poland POL
Portugal POR
Romania ROM
Spain SPA
Sweden SWE
Switzerland SWI
Türkiye-in-Europe TUE
Ukraine UKR
North Caucasus NCS ASIA-TEMPERATE
Transcaucasus TCS
Türkiye TUR

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 87 in flower of 116 examined

Peak flowering in Aug. Each bar is the share of Hieracium sabaudum 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. 87 of 116 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 5 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 611 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -7.0 °C -3.8 °C 1.8 °C
Warmest month, mean daily high 19.5 °C 23.4 °C 26.9 °C
Annual rainfall 539 mm 758 mm 1,558 mm
Rainfall in the driest quarter 83 mm 138 mm 291 mm

It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 611 research-grade observations of Hieracium sabaudum 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 76 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 auratum Fr.
  • Hieracium autumnale Griseb.
  • Hieracium barcinonense Sennen
  • Hieracium bladonii Pugsley
  • Hieracium boreale subsp. dumosum (Jord.) Sudre
  • Hieracium boreale subsp. fuscidulum Fr.
  • Hieracium boreale subsp. obliquum (Jord.) Sudre
  • Hieracium boreale subsp. quercetorum (Boreau) Sudre
  • Hieracium boreale subsp. virgultorum (Jord.) Sudre
  • Hieracium boreale unranked dispalatum Sudre
  • Hieracium boreale var. gracilentum Sudre
  • Hieracium boreale var. lugdunense Rouy
  • Hieracium boreale var. platyphyllum Arv.-Touv.
  • Hieracium boreale var. roffavieri Sudre
  • Hieracium boreale var. salticola Sudre
  • Hieracium boreale var. sedunense Gremli
  • Hieracium boreale var. subhirsutum Gremli
  • Hieracium brevifolium subsp. cumuliflorum Zahn
  • Hieracium concinnum Jord.
  • Hieracium croceostylum Pugsley
  • Hieracium curvidens Jord.
  • Hieracium dispalatum var. macrodon Sudre
  • Hieracium dumosum Jord.
  • Hieracium eminulum Sudre

and 52 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.