# Lepidium

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{{Short description|Genus of flowering plants in the cabbage family Brassicaceae}}
{{For|the aquatic fern also called 'pepperwort'|Marsilea minuta}}
{{Automatic taxobox
|image = Lepidium flavum 3.jpg
|image_caption = ''[Lepidium flavum](/source/Lepidium_flavum)''
|taxon = Lepidium
|authority = [L.](/source/Carl_Linnaeus) (1753)
|subdivision_ranks = Species
|subdivision = 265, see text
|subdivision_ref = <ref name = powo>[https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:60437330-2 ''Lepidium'' L.] ''[Plants of the World Online](/source/Plants_of_the_World_Online)''. Retrieved 3 April 2024.</ref>
|synonyms = {{collapsible list|bullets=true
 |title={{small|Synonymy}}
|''Carara'' {{small|Medik. (1792)}}
|''Cardamon'' {{small|Fourr. (1868)}}
|''Cardaria'' {{small|Desv. (1815)}}
|''Cardiolepis'' {{small|Wallr. (1822)}}
|''Coronopus'' {{small|Zinn (1757)}}
|''Cotyliscus'' {{small|Desv. (1815)}}
|''Cynocardamum'' {{small|Webb & Berthel. (1836)}}
|''Cyphocardamum'' {{small|Hedge (1968)}}
|''Dileptium'' {{small|Raf. (1817)}}
|''Eudistemon'' {{small|Raf. (1830)}}
|''Hymenophysa'' {{small|C.A.Mey. (1831)}}
|''Iberis'' {{small|Hill (1756), nom. illeg.}}
|''Jundzillia'' {{small|Andrz. ex DC. (1821), not validly publ.}}
|''Lasioptera'' {{small|Andrz. ex DC. (1821)}}
|''Lepia'' {{small|Desv. (1815)}}
|''Lepicochlea'' {{small|Rojas (1918)}}
|''Lepidiberis'' {{small|Fourr. (1868)}}
|''Lepidion'' {{small|St.-Lag. (1880), orth. var.}}
|''Lithodraba'' {{small|Boelcke (1951)}}
|''Monoploca'' {{small|Bunge (1845)}}
|''Nasturtiastrum'' {{small|Gillet & Magne (1863)}}
|''Nasturtioides'' {{small|Medik. (1792)}}
|''Nasturtiolum'' {{small|Medik. (1792)}}
|''Nasturtium'' {{small|Mill. (1754), nom. rej.}}
|''Neolepia'' {{small|W.A.Weber (1989)}}
|''Papuzilla'' {{small|Ridl. (1916)}}
|''Physolepidion'' {{small|Schrenk ex Fisch. & C.A.Mey. (1841)}}
|''Semetum'' {{small|Raf. (1840)}}
|''Senckenbergia'' {{small|G.Gaertn., B.Mey. & Scherb. (1800)}}
|''Senebiera'' {{small|DC. (1799)}}
|''Sennebiera'' {{small|Willd. (1809)}}
|''Sprengeria'' {{small|Greene (1906)}}
|''Stroganowia'' {{small|Kar. & Kir. (1841)}}
|''Stubendorffia'' {{small|Schrenk ex Fisch. (1844)}}
|''Uranodactylus'' {{small|Gilli (1959)}}
|''Winklera'' {{small|Regel (1886)}}
}}
|synonyms_ref = <ref name = powo/>
}}

'''''Lepidium''''' is a genus of plants in the mustard/cabbage family, [Brassicaceae](/source/Brassicaceae). The genus is widely distributed in the Americas, Africa, Asia, Europe, and Australia.<ref name=fna>[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=118034 ''Lepidium''.] Flora of North America.</ref> It includes familiar species such as [garden cress](/source/garden_cress), [maca](/source/Lepidium_meyenii), and [dittander](/source/Lepidium_latifolium). General [common name](/source/common_name)s include '''peppercress''', '''peppergrass''', '''pepperweed''', and '''pepperwort'''.  Some species form [tumbleweed](/source/tumbleweed)s.<ref name="Faulkner1917">{{cite book |title=The Mysteries of the Flowers |url=https://archive.org/details/mysteriesofflowe00fauluoft |author=Faulkner, H. W. |publisher=Frederick A. Stokes company |year=1917 |page=[https://archive.org/details/mysteriesofflowe00fauluoft/page/238 238]}} page 210</ref>
The genus name ''Lepidium'' is from [Greek](/source/Greek_language) meaning 'small scale', which is thought to be derived from a folk medicine usage of the plant to treat [leprosy](/source/leprosy), which cause small scales on the skin. Another meaning is related to the small scale-like fruit.<ref name=Sia>Sia Morhardt and Emil Morhardt {{google books |1XyN-u-Bk40C|California Desert Flowers: An Introduction to Families, Genera, and Species |page=101}}</ref>

==Species==
[[File:Cakile maritima habitat.jpg|thumb|right|''[Lepidium latifolium](/source/Lepidium_latifolium)'' on the [Kattegat](/source/Kattegat)]]
[[File:Lepidium lasiocarpum var lasiocarpum 7.jpg|thumb|right|''[Lepidium lasiocarpum](/source/Lepidium_lasiocarpum)'' var. ''lasiocarpum'']]
[[File:Lepidium fremontii 3.jpg|thumb|right|''[Lepidium fremontii](/source/Lepidium_fremontii)'']]
{{Main|List of Lepidium species|l1=List of ''Lepidium'' species}}
[Plants of the World Online](/source/Plants_of_the_World_Online) accepts 265 species in the genus.<ref name = powo/> 10 species are found in [California](/source/California).<ref name=Sia/>

Species include:
{{div col|colwidth=25em}}
* ''[Lepidium africanum](/source/Lepidium_africanum)''
* ''[Lepidium amelum](/source/Lepidium_amelum)''
* ''[Lepidium amissum](/source/Lepidium_amissum)'' {{small|de Lange & Heenan}} - Waitakere scurvy grass (New Zealand); extinct
* ''[Lepidium aretioides](/source/Lepidium_aretioides)'' {{small|(Hedge) Al-Shehbaz}}
* ''[Lepidium armoracia](/source/Lepidium_armoracia)'' {{small|Fisch. & C.A. Mey. 1843}}
* ''[Lepidium apetalum](/source/Lepidium_apetalum)'' {{small|Willd.}} – ''du xing cai'' (Pinyin, China)<ref>[http://www.tropicos.org/Name/4105246 Tropicos.org. Missouri Botanical Garden. 20 Dec 2011]</ref>
* ''[Lepidium arbuscula](/source/Lepidium_arbuscula)''
* ''[Lepidium aschersonii](/source/Lepidium_aschersonii)'' {{small|Thell.}} – spiny peppercress
* ''[Lepidium austrinum](/source/Lepidium_austrinum)'' {{small|Small}} – Southern Pepperweed
* ''[Lepidium banksii](/source/Lepidium_banksii)''
* ''[Lepidium barnebyanum](/source/Lepidium_barnebyanum)''
* ''[Lepidium biplicatum](/source/Lepidium_biplicatum)''
* ''[Lepidium bonariense](/source/Lepidium_bonariense)'' – peppercress
* ''[Lepidium campestre](/source/Lepidium_campestre)'' – field pepperwort, field cress
* ''[Lepidium catapycnon](/source/Lepidium_catapycnon)''
* ''[Lepidium coronopus](/source/Lepidium_coronopus)'' – swine cress
* ''[Lepidium davisii](/source/Lepidium_davisii)'' – Davis' peppergrass<ref name="hagwood1">{{cite web |last=Hagwood |first=Sheri |title=Sensitive Plants of the JRA |url=http://www.blm.gov/pgdata/etc/medialib/blm/id/publications/technical_bulletins.Par.98306.File.dat/tb06-01.pdf |publisher=Idaho BLM |access-date=2 May 2014 |url-status=dead |archive-url=https://web.archive.org/web/20140503002232/http://www.blm.gov/pgdata/etc/medialib/blm/id/publications/technical_bulletins.Par.98306.File.dat/tb06-01.pdf |archive-date=3 May 2014}}</ref>
* ''[Lepidium densiflorum](/source/Lepidium_densiflorum)'' – common pepperweed
* ''[Lepidium desvauxii](/source/Lepidium_desvauxii)'' – bushy peppercress
* ''[Lepidium dictyotum](/source/Lepidium_dictyotum)''
* ''[Lepidium didymum](/source/Lepidium_didymum)''
* ''[Lepidium draba](/source/Lepidium_draba)'' – hoary cress
* ''[Lepidium drummondii](/source/Lepidium_drummondii)''
* ''[Lepidium echinatum](/source/Lepidium_echinatum)''
* ''[Lepidium ecuadoriense](/source/Lepidium_ecuadoriense)''
* ''[Lepidium englerianum](/source/Lepidium_englerianum)''
* ''[Lepidium fasciculatum](/source/Lepidium_fasciculatum)'' – bundled peppercress
* ''[Lepidium flavum](/source/Lepidium_flavum)''
* ''[Lepidium flexicaule](/source/Lepidium_flexicaule)''
* ''[Lepidium foliosum](/source/Lepidium_foliosum)'' – leafy peppercress
* ''[Lepidium fremontii](/source/Lepidium_fremontii)'' – desert pepperweed
* ''[Lepidium genistoides](/source/Lepidium_genistoides)''
* ''[Lepidium ginninderrense](/source/Lepidium_ginninderrense)''
* ''[Lepidium graminifolium](/source/Lepidium_graminifolium)''
* ''[Lepidium howei-insulae](/source/Lepidium_howei-insulae)'' – mustard & cress
* ''[Lepidium hypenantion](/source/Lepidium_hypenantion)''
* ''[Lepidium hyssopifolium](/source/Lepidium_hyssopifolium)''
* ''[Lepidium heterophyllum](/source/Lepidium_heterophyllum)'' – Smith's pepperwort, Smith's cress
* ''[Lepidium jaredii](/source/Lepidium_jaredii)'' – Jared's pepperweed
* ''[Lepidium lasiocarpum](/source/Lepidium_lasiocarpum)''
* ''[Lepidium latifolium](/source/Lepidium_latifolium)'' – pepperweed, dittander
* ''[Lepidium latipes](/source/Lepidium_latipes)''
* ''[Lepidium lyratogynum](/source/Lepidium_lyratogynum)''
* ''[Lepidium merrallii](/source/Lepidium_merrallii)''
*''[Lepidium medocinense](/source/Lepidium_medocinense)'' {{small|(Hauman) Al-Shehbaz}}
* ''[Lepidium meyenii](/source/Lepidium_meyenii)'' (syn. ''L. peruvianum'') – maca
* ''[Lepidium monoplocoides](/source/Lepidium_monoplocoides)'' – winged peppercress
* ''[Lepidium montanum](/source/Lepidium_montanum)'' – western pepperweed, mountain pepperweed
* ''[Lepidium nanum](/source/Lepidium_nanum)'' – dwarf pepperweed
* ''[Lepidium nesophilum](/source/Lepidium_nesophilum)''
* ''[Lepidium nitidum](/source/Lepidium_nitidum)'' – shining pepperweed
* ''[Lepidium oblongum](/source/Lepidium_oblongum)''
* ''[Lepidium oleraceum](/source/Lepidium_oleraceum)'' –  Cook's scurvy grass (near extinct)
* ''[Lepidium oxycarpum](/source/Lepidium_oxycarpum)'' – forked pepperweed
* ''[Lepidium oxytrichum](/source/Lepidium_oxytrichum)''
* ''[Lepidium papilliferum](/source/Lepidium_papilliferum)'' – slickspot peppergrass
* ''[Lepidium papillosum](/source/Lepidium_papillosum)'' – warty peppercress
* ''[Lepidium pedicellosum](/source/Lepidium_pedicellosum)''
* ''[Lepidium peregrinum](/source/Lepidium_peregrinum)''
* ''[Lepidium perfoliatum](/source/Lepidium_perfoliatum)''
* ''[Lepidium peruvianum](/source/Lepidium_peruvianum)''
* ''[Lepidium phlebopetalum](/source/Lepidium_phlebopetalum)''
* ''[Lepidium pholidogynum](/source/Lepidium_pholidogynum)''
* ''[Lepidium pinnatifidum](/source/Lepidium_pinnatifidum)''
* ''[Lepidium platypetalum](/source/Lepidium_platypetalum)'' – slender peppercress
* ''[Lepidium pseudohyssopifolium](/source/Lepidium_pseudohyssopifolium)''
* ''[Lepidium pseudoruderale](/source/Lepidium_pseudoruderale)''
* ''[Lepidium pseudotasmanicum](/source/Lepidium_pseudotasmanicum)''
* ''[Lepidium puberulum](/source/Lepidium_puberulum)''
* ''[Lepidium quitense](/source/Lepidium_quitense)''
* ''[Lepidium rotundum](/source/Lepidium_rotundum)'' – veined peppercress
* ''[Lepidium ruderale](/source/Lepidium_ruderale)'' – narrow-leaved pepperwort
* ''[Lepidium sagittulatum](/source/Lepidium_sagittulatum)''
* ''[Lepidium sativum](/source/Lepidium_sativum)'' – garden cress
* ''[Lepidium scandens](/source/Lepidium_scandens)''
* ''[Lepidium squamatum](/source/Lepidium_squamatum)''
* ''[Lepidium strictum](/source/Lepidium_strictum)''
* ''[Lepidium thurberi](/source/Lepidium_thurberi)'' – Thurber's peppergrass, Thurber's pepperweed
* ''[Lepidium virginicum](/source/Lepidium_virginicum)'' – Virginia peppercress
* ''[Lepidium xylodes](/source/Lepidium_xylodes)''
{{div col end}}

==See also==
* {{Cite book |last1=Everitt |first1=J.H. |last2=Lonard |first2=R.L. |last3=Little |first3=C.R. |title=Weeds in South Texas and Northern Mexico |publisher=Texas Tech University Press |location=Lubbock |year=2007}} {{ISBN|0-89672-614-2}}
*{{cite web |url=https://id.biodiversity.org.au/name/apni/68695 |title=''Lepidium'' |website=[Australian Plant Name Index](/source/Australian_Plant_Name_Index) (APNI) |publisher=Centre for Plant Biodiversity Research, [Australian Government](/source/Australian_Government) |access-date=15 March 2023}}

==References==
{{Reflist}}

== External links ==
*{{cite web |url=https://www.doc.govt.nz/upload/documents/science-and-technical/TSRP32.pdf |title=Inland ''Lepidium'' recovery plan 2000-2010 |year=2000 |publisher=Department of Conservation, Wellington, New Zealand | access-date = 2007-10-04}}
*{{cite web |url=https://www.doc.govt.nz/upload/documents/science-and-technical/tsrp26.pdf |title=Coastal Cresses (Nau) Recovery Plan |author=D.A. Norton |author2=P.J. de Lange |year=1999 |publisher=Department of Conservation, Wellington, New Zealand | access-date = 2007-04-19}}
* [https://www.invasivespeciesinfo.gov/profile/hairy-whitetop Species Profile: Hairy Whitetop (''Lepidium appelianum'').] National Invasive Species Information Center, [United States National Agricultural Library](/source/United_States_National_Agricultural_Library).

{{Transient receptor potential channel modulators}}
{{Taxonbar|from=Q146217}}
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Category:Lepidium
Category:Brassicaceae genera
Category:Tumbleweeds
Category:Botanical taxa named by Carl Linnaeus

{{Brassicaceae-stub}}

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Adapted from the Wikipedia article [Lepidium](https://en.wikipedia.org/wiki/Lepidium) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Lepidium?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.
