Clypeola jonthlaspiL.

WFO wfo-0000612598 Accepted WFO 2026-06 7 photographs CC0 / CC BY

Plate 1 figs. a–g · 5 observations

This species has been photographed under an open licence only 5 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Clypeola jonthlaspi, photographed by Oleksii Vasyliuk
fig. a Oleksii Vasyliuk, CC BY 4.0 / 2007-04-27 / obs. 94071543
Clypeola jonthlaspi, photographed by Mehdi Chetibi
fig. b Mehdi Chetibi, CC BY 4.0 / obs. 188153880
Clypeola jonthlaspi, photographed by Andre Hosper
fig. c Andre Hosper, CC BY 4.0 / obs. 23388107
Clypeola jonthlaspi, photographed by Andre Hosper
fig. d Andre Hosper, CC BY 4.0 / obs. 23375021
Clypeola jonthlaspi, photographed by Mehdi Chetibi
fig. e Mehdi Chetibi, CC BY 4.0 / obs. 188153796
Clypeola jonthlaspi, photographed by Mehdi Chetibi
fig. f Mehdi Chetibi, CC BY 4.0 / obs. 188153967
Clypeola jonthlaspi, photographed by Quentin Groom
fig. g Quentin Groom, CC0 1.0 / obs. 7321516

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 40 botanical countries

Regions where Clypeola jonthlaspi is native: Algeria, Libya, Morocco, Tunisia, Afghanistan, Cyprus, East Aegean Is., Gulf States, Iran, Iraq, Kazakhstan, Kirgizstan, Lebanon-Syria, North Caucasus, Oman, Palestine, Saudi Arabia, Sinai, Tadzhikistan, Transcaucasus, Türkiye, Turkmenistan, Uzbekistan, Pakistan, Albania, Baleares, Bulgaria, Corse, France, Greece, Italy, Kriti, Krym, NW. Balkan Pen., Romania, Sardegna, Sicilia, Spain, Switzerland, Türkiye-in-Europe AlgeriaLibyaMoroccoTunisiaAfghanistanCyprusEast Aegean Is.Gulf StatesIranIraqKazakhstanKirgizstanLebanon-SyriaNorth CaucasusOmanPalestineSaudi ArabiaSinaiTadzhikistanTranscaucasusTürkiyeTurkmenistanUzbekistanPakistanAlbaniaBulgariaCorseFranceGreeceItalyKritiKrymNW. Balkan Pen.RomaniaSiciliaSpainSwitzerlandTürkiye-in-Europe BalearesSardegna
Native distribution of Clypeola jonthlaspi, 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. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Afghanistan AFG ASIA-TEMPERATE
Cyprus CYP
East Aegean Is. EAI
Gulf States GST
Iran IRN
Iraq IRQ
Kazakhstan KAZ
Kirgizstan KGZ
Lebanon-Syria LBS
North Caucasus NCS
Oman OMA
Palestine PAL
Saudi Arabia SAU
Sinai SIN
Tadzhikistan TZK
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Uzbekistan UZB
Albania ALB EUROPE
Baleares BAL
Bulgaria BUL
Corse COR
France FRA
Greece GRC
Italy ITA
Kriti KRI
Krym KRY
NW. Balkan Pen. YUG
Romania ROM
Sardegna SAR
Sicilia SIC
Spain SPA
Switzerland SWI
Türkiye-in-Europe TUE
Algeria ALG AFRICA
Libya LBY
Morocco MOR
Tunisia TUN
Pakistan PAK ASIA-TROPICAL

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 717 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low -4.5 °C 0.9 °C 8.3 °C
Warmest month, mean daily high 23.7 °C 27.2 °C 32.6 °C
Annual rainfall 363 mm 677 mm 1,068 mm
Rainfall in the driest quarter 4 mm 91 mm 171 mm

It is found where winters bring light 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 717 research-grade observations of Clypeola jonthlaspi 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 46 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.

  • Alyssum jonthlaspi (L.) Clairv.
  • Clypeola ambigua Jord. & Fourr.
  • Clypeola bruhnsii Gruner
  • Clypeola gaudinii Trachsel
  • Clypeola glabra Boiss.
  • Clypeola gracilis Planch.
  • Clypeola hispida C.Presl
  • Clypeola hispidula Jord. & Fourr.
  • Clypeola jonthlaspi f. glabriuscula (Gruner) Trinajstić
  • Clypeola jonthlaspi f. lanata Trinajstić
  • Clypeola jonthlaspi f. petraea (Jord. & Fourr.) Trinajstić
  • Clypeola jonthlaspi subsp. gaudinii (Trachsel) Fiori
  • Clypeola jonthlaspi subsp. jonthlaspi L.
  • Clypeola jonthlaspi subsp. macrocarpa (Gruner) Breistr.
  • Clypeola jonthlaspi subsp. macrocarpa (Caruel) Fiori
  • Clypeola jonthlaspi subsp. microcarpa (Moris) Arcang.
  • Clypeola jonthlaspi subsp. microcarpa (G.Moris) Breistr.
  • Clypeola jonthlaspi var. glabra (Boiss.) Fiori
  • Clypeola jonthlaspi var. glabriuscula (Gruner) Breistr.
  • Clypeola jonthlaspi var. glabriuscula Gruner
  • Clypeola jonthlaspi var. hispida (C.Presl) A.Reyn.
  • Clypeola jonthlaspi var. intermedia Halácsy
  • Clypeola jonthlaspi var. jonthlaspi L.
  • Clypeola jonthlaspi var. lasiocarpa Gruner

and 22 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. 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.