Sisymbrium polymorphum(Murray) Roth

WFO wfo-0000431849 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Sisymbrium polymorphum, photographed by Aleksei Baushev
fig. a Aleksei Baushev, CC BY 4.0 / 2022-05-06 / obs. 196332848
Sisymbrium polymorphum, photographed by Иван Ковтун Ivan Kovtun
fig. b Иван Ковтун Ivan Kovtun, CC BY 4.0 / obs. 192883360
Sisymbrium polymorphum, photographed by Andrew Bazdyrev
fig. c Andrew Bazdyrev, CC BY 4.0 / obs. 134330547
Sisymbrium polymorphum, photographed by Нурхайдарова Татьяна
fig. d Нурхайдарова Татьяна, CC BY 4.0 / obs. 84841427
Sisymbrium polymorphum, photographed by Konstantin Grebennikov
fig. e Konstantin Grebennikov, CC BY 4.0 / obs. 99957389
Sisymbrium polymorphum, photographed by Елена Патерикина
fig. f Елена Патерикина, CC BY 4.0 / obs. 161721131
Sisymbrium polymorphum, photographed by Dmitriy Bochkov
fig. g Dmitriy Bochkov, CC BY 4.0 / obs. 143410613
Sisymbrium polymorphum, photographed by Dmitriy Bochkov
fig. h Dmitriy Bochkov, CC BY 4.0 / obs. 174709704

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 28 botanical countries

Regions where Sisymbrium polymorphum is native: Altay, China North-Central, Chita, Inner Mongolia, Irkutsk, Kazakhstan, Kirgizstan, Krasnoyarsk, Magadan, Manchuria, Mongolia, North Caucasus, Primorye, Qinghai, Tadzhikistan, Tuva, West Siberia, Xinjiang, Yakutiya, Bulgaria, Central European Russia, East European Russia, Hungary, Krym, Poland, Romania, South European Russia, Ukraine AltayChina North-CentralChitaInner MongoliaIrkutskKazakhstanKirgizstanKrasnoyarskMagadanManchuriaMongoliaNorth CaucasusPrimoryeQinghaiTadzhikistanTuvaWest SiberiaXinjiangYakutiyaBulgariaCentral European RussiaEast European RussiaHungaryKrymPolandRomaniaSouth European RussiaUkraine
Native distribution of Sisymbrium polymorphum, 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
Altay ALT ASIA-TEMPERATE
China North-Central CHN
Chita CTA
Inner Mongolia CHI
Irkutsk IRK
Kazakhstan KAZ
Kirgizstan KGZ
Krasnoyarsk KRA
Magadan MAG
Manchuria CHM
Mongolia MON
North Caucasus NCS
Primorye PRM
Qinghai CHQ
Tadzhikistan TZK
Tuva TVA
West Siberia WSB
Xinjiang CHX
Yakutiya YAK
Bulgaria BUL EUROPE
Central European Russia RUC
East European Russia RUE
Hungary HUN
Krym KRY
Poland POL
Romania ROM
South European Russia RUS
Ukraine UKR

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 325 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -19.6 °C -10.0 °C -4.0 °C
Warmest month, mean daily high 23.4 °C 25.9 °C 28.9 °C
Annual rainfall 313 mm 493 mm 603 mm
Rainfall in the driest quarter 36 mm 95 mm 120 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 325 research-grade observations of Sisymbrium polymorphum 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 20 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.

  • Arabis crassifolia Ledeb.
  • Brassica polymorpha Murr.
  • Cheiranthus junceus (M.Bieb.) Kit.
  • Cheiranthus junceus (Willd.) Waldst. & Kit.
  • Cheiranthus leptophyllus Willd. ex DC.
  • Cheiranthus virgatus Patr. ex DC.
  • Cheirinia juncea Link
  • Erysimum crassifolium (Ledeb.) Kuntze
  • Erysimum junceum Willd.
  • Hesperis juncea (Willd.) Kuntze
  • Sisymbrium angustifolium Regel & Schmalh.
  • Sisymbrium junceum M.Bieb.
  • Sisymbrium junceum subsp. intermedium Ovczinnikova
  • Sisymbrium junceum var. latifolium Korsh.
  • Sisymbrium junceum var. soongaricum Regel & Herder
  • Sisymbrium pallasii Spreng.
  • Sisymbrium polymorphum var. latifolium (Korsh.) O.E.Schulz
  • Sisymbrium polymorphum var. polymorphum
  • Sisymbrium polymorphum var. soongaricum (Regel & Herder) O.E.Schulz
  • Stanleya cartilaginea Spreng.

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.