Askellia pygmaea(Ledeb.) Sennikov

dwarf alpine hawksbeard

WFO wfo-0000049044 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Askellia pygmaea, photographed by Pavel Komkov
fig. a Pavel Komkov, CC BY 4.0 / 2021-08-01 / obs. 150084396
Askellia pygmaea, photographed by J Straka
fig. b J Straka, CC BY 4.0 / obs. 151504544
Askellia pygmaea, photographed by J Straka
fig. c J Straka, CC BY 4.0 / obs. 151504555
Askellia pygmaea, photographed by J Straka
fig. d J Straka, CC BY 4.0 / obs. 151504566
Askellia pygmaea, photographed by Jason Grant
fig. e Jason Grant, CC BY 4.0 / obs. 151145072
Askellia pygmaea, photographed by Trevor Van Loon
fig. f Trevor Van Loon, CC BY 4.0 / obs. 143234591
Askellia pygmaea, photographed by Matt Muir
fig. g Matt Muir, CC BY 4.0 / obs. 146971713
Askellia pygmaea, photographed by rosaceae_roberts
fig. h rosaceae_roberts, CC BY 4.0 / obs. 174517780

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 32 botanical countries

Regions where Askellia pygmaea is native: Altay, Buryatiya, Chita, Irkutsk, Kamchatka, Kazakhstan, Khabarovsk, Kirgizstan, Krasnoyarsk, Magadan, Mongolia, Tibet, Tuva, Xinjiang, Yakutiya, Alaska, Alberta, British Columbia, California, Colorado, Idaho, Labrador, Montana, Nevada, Newfoundland, Northwest Territories, Nunavut, Oregon, Utah, Washington, Wyoming, Yukon AltayBuryatiyaChitaIrkutskKamchatkaKazakhstanKhabarovskKirgizstanKrasnoyarskMagadanMongoliaTibetTuvaXinjiangYakutiyaAlaskaAlbertaBritish ColumbiaCaliforniaColoradoIdahoLabradorMontanaNevadaNewfoundlandNorthwest TerritoriesNunavutOregonUtahWashingtonWyomingYukon
Native distribution of Askellia pygmaea, 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
Alaska ASK NORTHERN AMERICA
Alberta ABT
British Columbia BRC
California CAL
Colorado COL
Idaho IDA
Labrador LAB
Montana MNT
Nevada NEV
Newfoundland NFL
Northwest Territories NWT
Nunavut NUN
Oregon ORE
Utah UTA
Washington WAS
Wyoming WYO
Yukon YUK
Altay ALT ASIA-TEMPERATE
Buryatiya BRY
Chita CTA
Irkutsk IRK
Kamchatka KAM
Kazakhstan KAZ
Khabarovsk KHA
Kirgizstan KGZ
Krasnoyarsk KRA
Magadan MAG
Mongolia MON
Tibet CHT
Tuva TVA
Xinjiang CHX
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.

Flowering 85 in flower of 118 examined

Peak flowering in Jun. Each bar is the share of Askellia pygmaea 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. 85 of 118 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.

Where it actually grows measured, from 776 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -31.6 °C -20.2 °C -12.1 °C
Warmest month, mean daily high 11.2 °C 14.9 °C 20.7 °C
Annual rainfall 396 mm 1,003 mm 1,816 mm
Rainfall in the driest quarter 32 mm 119 mm 320 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 776 research-grade observations of Askellia pygmaea 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 36 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.

  • Askellia nana (Richardson) W.A.Weber
  • Askellia nana subsp. nana
  • Askellia nana subsp. ramosa (Babc.) W.A.Weber
  • Askellia pygmaea subsp. ramosa (Babc.) K.L.Chambers & S.C.Meyers
  • Barkhausia nana (Richardson) DC.
  • Barkhausia nana var. flaccida (Ledeb.) Ledeb.
  • Barkhausia nana var. lyratifolia Turcz.
  • Barkhausia nana var. lyratifolia DC.
  • Barkhausia nana var. nana
  • Barkhausia nana var. pygmaea (Ledeb.) Ledeb.
  • Crepis cochlearifolia Fisch. ex Herder
  • Crepis humilis Fisch. ex Herder
  • Crepis nana Richardson
  • Crepis nana subsp. clivicola A.H.Legge
  • Crepis nana subsp. ramosa Babc.
  • Crepis nana subsp. typica Babc.
  • Crepis nana var. compacta Krylov
  • Crepis nana var. lyratifolia (Turcz.) Hultén
  • Crepis nana var. nana
  • Crepis nana var. ramosa (Babc.) Cronquist
  • Hieracioides nana (Richardson) Kuntze
  • Prenanthes polymorpha Ledeb.
  • Prenanthes polymorpha var. flaccida Ledeb.
  • Prenanthes polymorpha var. integrifolia Ledeb.

and 12 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 CRNA. 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.