Lepidium drabaL.

hoary cresswhitetop

WFO wfo-0000361312 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Lepidium draba, photographed by Piermario Maculan
fig. a Piermario Maculan, CC0 1.0 / 2022-06-12 / obs. 205572425
Lepidium draba, photographed by Юрий Данилевский (Yuriy Danilevsky)
fig. b Юрий Данилевский (Yuriy Danilevsky), CC BY 4.0 / obs. 205757654
Lepidium draba, photographed by Zeke Marshall
fig. c Zeke Marshall, CC BY 4.0 / obs. 204355368
Lepidium draba, photographed by Vladimír Fuka
fig. d Vladimír Fuka, CC BY 4.0 / obs. 204726345
Lepidium draba, photographed by Yann Kemper
fig. e Yann Kemper, CC0 1.0 / obs. 203287447
Lepidium draba, photographed by Daniel Cahen
fig. f Daniel Cahen, CC BY 4.0 / obs. 202815717
Lepidium draba, photographed by Daniel Cahen
fig. g Daniel Cahen, CC BY 4.0 / obs. 202827538
Lepidium draba, photographed by SK53
fig. h SK53, CC BY-SA 4.0 / obs. 200781892

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 51 botanical countries

Regions where Lepidium draba is native: Algeria, Egypt, Libya, Morocco, Tunisia, Altay, China North-Central, Cyprus, East Aegean Is., Gulf States, Iran, Iraq, Kazakhstan, Kirgizstan, Lebanon-Syria, Manchuria, North Caucasus, Oman, Palestine, Saudi Arabia, Sinai, Transcaucasus, Türkiye, Turkmenistan, Uzbekistan, Xinjiang, Yemen, Pakistan, West Himalaya, Albania, Austria, Baleares, Bulgaria, Central European Russia, Corse, East European Russia, France, Greece, Hungary, Italy, Kriti, Krym, Northwest European Russia, NW. Balkan Pen., Romania, Sardegna, Sicilia, South European Russia, Spain, Türkiye-in-Europe, Ukraine AlgeriaEgyptLibyaMoroccoTunisiaAltayChina North-CentralCyprusEast Aegean Is.Gulf StatesIranIraqKazakhstanKirgizstanLebanon-SyriaManchuriaNorth CaucasusOmanPalestineSaudi ArabiaSinaiTranscaucasusTürkiyeTurkmenistanUzbekistanXinjiangYemenPakistanWest HimalayaAlbaniaAustriaBulgariaCentral European RussiaCorseEast European RussiaFranceGreeceHungaryItalyKritiKrymNorthwest European RussiaNW. Balkan Pen.RomaniaSiciliaSouth European RussiaSpainTürkiye-in-EuropeUkraine BalearesSardegna
Native distribution of Lepidium draba, 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
Altay ALT ASIA-TEMPERATE
China North-Central CHN
Cyprus CYP
East Aegean Is. EAI
Gulf States GST
Iran IRN
Iraq IRQ
Kazakhstan KAZ
Kirgizstan KGZ
Lebanon-Syria LBS
Manchuria CHM
North Caucasus NCS
Oman OMA
Palestine PAL
Saudi Arabia SAU
Sinai SIN
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Uzbekistan UZB
Xinjiang CHX
Yemen YEM
Albania ALB EUROPE
Austria AUT
Baleares BAL
Bulgaria BUL
Central European Russia RUC
Corse COR
East European Russia RUE
France FRA
Greece GRC
Hungary HUN
Italy ITA
Kriti KRI
Krym KRY
Northwest European Russia RUW
NW. Balkan Pen. YUG
Romania ROM
Sardegna SAR
Sicilia SIC
South European Russia RUS
Spain SPA
Türkiye-in-Europe TUE
Ukraine UKR
Algeria ALG AFRICA
Egypt EGY
Libya LBY
Morocco MOR
Tunisia TUN
Pakistan PAK ASIA-TROPICAL
West Himalaya WHM

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 1,271 in flower of 1,585 examined

Peak flowering in May. Each bar is the share of Lepidium draba 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. 1,271 of 1,585 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 2 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.

Also published as 22 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.

  • Cardaria brachypetala Opiz
  • Cardaria cochlearia Spach
  • Cardaria draba (L.) Desv.
  • Cardaria draba f. macrocarpa (Franch.) O.E.Schulz
  • Cardaria draba subsp. draba Desv.
  • Cardiolepis dentata Wallr.
  • Cochlearia draba (L.) L.
  • Crucifera cardaria E.H.L.Krause
  • Draba ruderalis Baumg.
  • Jundzillia draba Andrz.
  • Lepidium arvense J.S.Muell.
  • Lepidium arvense Mill.
  • Lepidium diversifolium Freyn & Sint. ex Freyn
  • Lepidium draba subsp. chalepense (L.) Thell.
  • Lepidium draba subsp. draba L.
  • Lepidium draba var. auriculatum (Boiss.) N.Busch
  • Lepidium draba var. chalepense (L.) Thell.
  • Lepidium draba var. repens (Schrenk) Thell.
  • Lepidium drabifolium St.-Lag.
  • Lepidium matritense Pau
  • Lepidium propinquum var. auriculatum Boiss.
  • Nasturtium draba (L.) Crantz

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.