Lepidium perfoliatumL.

clasping pepperweed

WFO wfo-0000358744 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Lepidium perfoliatum, photographed by Shane Johnson
fig. a Shane Johnson, CC0 1.0 / 2022-05-23 / obs. 202332018
Lepidium perfoliatum, photographed by Randal
fig. b Randal, CC0 1.0 / obs. 200720997
Lepidium perfoliatum, photographed by Alan Rockefeller
fig. c Alan Rockefeller, CC BY 4.0 / obs. 198792437
Lepidium perfoliatum, photographed by Aleksei Baushev
fig. d Aleksei Baushev, CC BY 4.0 / obs. 196463042
Lepidium perfoliatum, photographed by Daryl Nolan
fig. e Daryl Nolan, CC0 1.0 / obs. 194585717
Lepidium perfoliatum, photographed by Daniel S.
fig. f Daniel S., CC BY 4.0 / obs. 188838144
Lepidium perfoliatum, photographed by Olena V. Vakarenko
fig. g Olena V. Vakarenko, CC BY 4.0 / obs. 182015643
Lepidium perfoliatum, photographed by Igor Balashov
fig. h Igor Balashov, CC BY 4.0 / obs. 148095878

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 36 botanical countries

Regions where Lepidium perfoliatum is native: Afghanistan, Altay, China North-Central, China Southeast, Cyprus, East Aegean Is., Inner Mongolia, Iran, Iraq, Kazakhstan, Kirgizstan, Lebanon-Syria, Manchuria, North Caucasus, Tadzhikistan, Transcaucasus, Türkiye, Turkmenistan, Uzbekistan, Xinjiang, Pakistan, West Himalaya, Albania, Austria, Bulgaria, Central European Russia, Czechia-Slovakia, East European Russia, Greece, Hungary, Krym, NW. Balkan Pen., Romania, South European Russia, Türkiye-in-Europe, Ukraine AfghanistanAltayChina North-CentralChina SoutheastCyprusEast Aegean Is.Inner MongoliaIranIraqKazakhstanKirgizstanLebanon-SyriaManchuriaNorth CaucasusTadzhikistanTranscaucasusTürkiyeTurkmenistanUzbekistanXinjiangPakistanWest HimalayaAlbaniaAustriaBulgariaCentral European RussiaCzechia-SlovakiaEast European RussiaGreeceHungaryKrymNW. Balkan Pen.RomaniaSouth European RussiaTürkiye-in-EuropeUkraine
Native distribution of Lepidium perfoliatum, 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
Afghanistan AFG ASIA-TEMPERATE
Altay ALT
China North-Central CHN
China Southeast CHS
Cyprus CYP
East Aegean Is. EAI
Inner Mongolia CHI
Iran IRN
Iraq IRQ
Kazakhstan KAZ
Kirgizstan KGZ
Lebanon-Syria LBS
Manchuria CHM
North Caucasus NCS
Tadzhikistan TZK
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Uzbekistan UZB
Xinjiang CHX
Albania ALB EUROPE
Austria AUT
Bulgaria BUL
Central European Russia RUC
Czechia-Slovakia CZE
East European Russia RUE
Greece GRC
Hungary HUN
Krym KRY
NW. Balkan Pen. YUG
Romania ROM
South European Russia RUS
Türkiye-in-Europe TUE
Ukraine UKR
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 170 in flower of 264 examined

Peak flowering in Apr. Each bar is the share of Lepidium perfoliatum 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. 170 of 264 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 4 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 3 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 heterophyllum Ruiz & Pav. ex DC.
  • Crucifera diversifolia E.H.L.Krause
  • Nasturtium perfoliatum Besser

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.