Lepidium bonarienseL.

Argentine pepperweedpepper cresspepper weed

WFO wfo-0000358581 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Lepidium bonariense, photographed by Greg Tasney
fig. a Greg Tasney, CC BY-SA 4.0 / 2022-04-09 / obs. 187029515
Lepidium bonariense, photographed by Eduardo Luis Beltrocco
fig. b Eduardo Luis Beltrocco, CC BY 4.0 / obs. 165572682
Lepidium bonariense, photographed by Thomas Mesaglio
fig. c Thomas Mesaglio, CC BY 4.0 / obs. 154099122
Lepidium bonariense, photographed by Thomas Mesaglio
fig. d Thomas Mesaglio, CC BY 4.0 / obs. 125080186
Lepidium bonariense, photographed by Thomas Mesaglio
fig. e Thomas Mesaglio, CC BY 4.0 / obs. 125080255
Lepidium bonariense, photographed by Doug Miller
fig. f Doug Miller, CC BY 4.0 / obs. 112330232
Lepidium bonariense, photographed by Thomas Mesaglio
fig. g Thomas Mesaglio, CC BY 4.0 / obs. 96765501
Lepidium bonariense, photographed by Joe Potter Butler
fig. h Joe Potter Butler, CC BY 4.0 / obs. 31568034

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 12 botanical countries

Regions where Lepidium bonariense is native: Argentina Northeast, Argentina Northwest, Argentina South, Bolivia, Brazil Northeast, Brazil South, Brazil Southeast, Chile Central, Chile North, Juan Fernández Is., Paraguay, Uruguay Argentina NortheastArgentina NorthwestArgentina SouthBoliviaBrazil NortheastBrazil SouthBrazil SoutheastChile CentralChile NorthParaguayUruguay
Native distribution of Lepidium bonariense, 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
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Argentina South AGS
Bolivia BOL
Brazil Northeast BZE
Brazil South BZS
Brazil Southeast BZL
Chile Central CLC
Chile North CLN
Juan Fernández Is. JNF
Paraguay PAR
Uruguay URU

Not drawn on the map: Juan Fernández 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.

Also published as 9 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.

  • Lepidium bonariense f. microcarpum Thell.
  • Lepidium bonariense var. hirsutulum Thell.
  • Lepidium bonariense var. microcarpum Thell.
  • Lepidium bonariense var. pseudovirginicum Thell.
  • Lepidium mendocinum Phil.
  • Nasturtium bonariense Kuntze
  • Thlaspi bonariense Poir.
  • Thlaspi multifidum Poir.
  • Thlaspi pinnatifidum F.Phil.

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.