Artemisia tilesiiLedeb.

Tilesius' wormwood

WFO wfo-0000086061 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Artemisia tilesii, photographed by Yurii Basov
fig. a Yurii Basov, CC BY 4.0 / 2021-09-09 / obs. 156260113

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 3724081
Filed as
Artemisia tilesii Ledeb.
Det. by
Sokoloff, P. C.
Collected
S. Edlund 1974-08-06
Origin
CA
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 24 botanical countries

Regions where Artemisia tilesii is native: Japan, Kamchatka, Khabarovsk, Krasnoyarsk, Kuril Is., Magadan, Sakhalin, West Siberia, Yakutiya, North European Russia, Alaska, Alberta, British Columbia, Idaho, Manitoba, Montana, Northwest Territories, Nunavut, Ontario, Oregon, Québec, Saskatchewan, Washington, Yukon JapanKamchatkaKhabarovskKrasnoyarskMagadanSakhalinWest SiberiaYakutiyaNorth European RussiaAlaskaAlbertaBritish ColumbiaIdahoManitobaMontanaNorthwest TerritoriesNunavutOntarioOregonQuébecSaskatchewanWashingtonYukon
Native distribution of Artemisia tilesii, 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
Idaho IDA
Manitoba MAN
Montana MNT
Northwest Territories NWT
Nunavut NUN
Ontario ONT
Oregon ORE
Québec QUE
Saskatchewan SAS
Washington WAS
Yukon YUK
Japan JAP ASIA-TEMPERATE
Kamchatka KAM
Khabarovsk KHA
Krasnoyarsk KRA
Kuril Is. KUR
Magadan MAG
Sakhalin SAK
West Siberia WSB
Yakutiya YAK
North European Russia RUN EUROPE

Not drawn on the map: Kuril Is.. 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.

Where it actually grows measured, from 896 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -29.7 °C -22.4 °C -5.0 °C
Warmest month, mean daily high 9.3 °C 16.7 °C 22.1 °C
Annual rainfall 354 mm 648 mm 1,949 mm
Rainfall in the driest quarter 39 mm 82 mm 283 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 896 research-grade observations of Artemisia tilesii 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 29 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.

  • Artemisia elatior Rydb.
  • Artemisia gormanii Rydb.
  • Artemisia hookeriana Besser
  • Artemisia hultenii Maximova
  • Artemisia nipponica var. nipponica
  • Artemisia opulenta f. laciniata Pamp.
  • Artemisia pampaninii Kitam.
  • Artemisia tilesii f. genuina Pamp.
  • Artemisia tilesii f. pubescens G.N.Jones
  • Artemisia tilesii f. tilesii
  • Artemisia tilesii subsp. elatior (Torr. & A.Gray) Hultén
  • Artemisia tilesii subsp. gormanii (Rydb.) Hultén
  • Artemisia tilesii subsp. hultenii (Maximova) V.G.Sergienko
  • Artemisia tilesii subsp. hultenii (M.I.Maximova) Ameljcz.
  • Artemisia tilesii subsp. tilesii
  • Artemisia tilesii subsp. typica D.D.Keck
  • Artemisia tilesii subsp. unalaschcensis (Besser) Hultén
  • Artemisia tilesii var. aleutica (Hultén) S.L.Welsh
  • Artemisia tilesii var. arctica Besser
  • Artemisia tilesii var. elatior Torr. & A.Gray
  • Artemisia tilesii var. kotzebuensis Besser
  • Artemisia tilesii var. tilesii
  • Artemisia tilesii var. unalaschcensis Besser
  • Artemisia unalaskensis Rydb.

and 5 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.