Lepidium L.
  • Sp. Pl. 2: 643. 1753. (1 May 1753)
  • Peppergrass, pepperwort, cress, peppercress [Greek lepidion or lepidos, scale, alluding to appearance of fruit]


Cite taxon page as 'WFO (2020): Lepidium L. Published on the Internet;http://www.worldfloraonline.org/taxon/wfo-4000021089. Accessed on: 21 Sep 2020'

General Information

Herbs annual, biennial, or perennial, sometimes subshrubs, rarely shrubs or climbers. Trichomes absent or simple. Stems erect or ascending, sometimes creeping, simple or branched basally and/or apically. Basal leaves rosulate or not, simple, entire or pinnately dissected. Cauline leaves petiolate or sessile, base cuneate, attenuate, auriculate, sagittate, or amplexicaul, margin entire, dentate, or dissected. Racemes ebracteate, corymbose, elongated or not in fruit. Fruiting pedicels terete, flattened, or winged, erect or divaricate. Sepals ovate or oblong, rarely orbicular, base of lateral pair not saccate. Petals white, yellow, or pink, erect or spreading, sometimes rudimentary or absent; blade obovate, spatulate, oblong, oblanceolate, orbicular, linear, or filiform, apex obtuse, rounded, or emarginate; claw absent or distinct. Stamens 2 and median, sometimes 6 and tetradynamous or subequal in length, rarely 4 and all median or 2 median and 2 lateral; anthers ovate or oblong. Nectar glands 4 or 6, distinct; median glands always present. Ovules 2 per ovary; placentation apical. Fruit dehiscent silicles, oblong, ovate, obovate, cordate, obcordate, elliptic, or orbicular, strongly angustiseptate; valves veinless or prominently veined, keeled or not, apically winged or wingless; replum rounded; septum complete or perforated, membranous; style absent, obsolete, or distinct, included or exserted from apical notch of fruit; stigma capitate, entire or rarely 2-lobed. Seeds 1 per locule, winged, margined, or wingless, oblong or ovate, plump or flattened; seed coat smooth, minutely reticulate, or papillate, usually copiously mucilaginous when wetted; cotyledons incumbent, rarely accumbent or diplecolobal.

  • Provided by: [D].Flora Of CHina @ efloras.org
    • Source: [
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    Plants not scapose; glabrous, pubescent, hirsute, or pilose. Stems usually erect or ascending, sometimes procumbent, decumbent, or prostrate, unbranched or branched. Leaves usually basal and cauline (basal absent in L. fremontii); petiolate or sessile; basal rosulate or not, petiolate (or petiole undifferentiated from blade), blade margins entire, dentate, denticulate, serrate, crenate, or lobed; cauline petiolate or sessile, blade (base auriculate or not), margins entire, dentate, or pinnately divided. Racemes (usually corymbose), elongated or not in fruit. Fruiting pedicels erect to divaricate, slender or stout. Flowers: sepals (usually deciduous, sometimes persistent), usually ovate or oblong, rarely suborbicular; petals (erect or spreading, sometimes rudimentary or absent), obovate, spatulate, oblong, oblanceolate, orbicular, linear, or filiform, claw absent or differentiated from blade, (apex obtuse, rounded, or emarginate); stamens 2 or 4 and equal in length, lateral or median, or 6 and tetradynamous; filaments not dilated basally; anthers ovate or oblong; (ovary placentation apical); nectar glands (4 or 6), distinct, median glands often present. Fruits schizocarps or silicles, (rarely indehiscent), sessile, didymous, oblong, ovate, obovate, cordate, obcordate, elliptic, orbicular, ovoid, obovoid, or globose, strongly angustiseptate or inflated and terete; valves each with prominent veins or not veined, (keeled or rounded, apex winged or not, thin or strongly thickened and ornamented, enclosing or readily releasing seed), glabrous or pubescent; replum rounded, (visible); septum complete or perforated; style absent, obsolete, or distinct, (included or exserted from apical notch); stigma capitate, usually entire, rarely 2-lobed. Seeds oblong or ovate [obovate], plump or flattened, winged, margined, or not winged; seed coat (smooth, minutely reticulate, or papillate), usually copiously mucilaginous when wetted, rarely not; cotyledons usually incumbent (accumbent in L. virginicum) [diplecolobal].

  • Provided by: [E].Flora of North America @ efloras.org
    • Source: [
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    19. Lepidium L.

    Por I.A.Al-Shehbaz y S.Fuentes-Soriano.

    Hierbas anuales o perennes (algunas veces subarbustos oarbustos). Tricomas ausentes o simples. Hojas caulinares cuneadas, auriculadaso amplexicaules, pecioladas o sésiles. Racimos ebracteados, corimbosos,alargados o no en fruto. Sépalos ovados u oblongos, la base del par lateral nosacciforme; pétalos obovados, oblanceolados, lineares o filiformes, algunasveces rudimentarios o ausentes, blancos (amarillos o rosados). Estambres 2(mediales) en Mesoamérica, algunas veces 6, tetradínamos o subiguales, rara vez4 (mediales o 2 mediales y 2 laterales); nectarios 4 o 6, mediales presentes;óvulos 2 por ovario. Silículas dehiscentes o rara vez indehiscentes, oblongas,ovadas, obovadas, cordatas, obcordiformes, elípticas u orbiculares,marcadamente angustiseptas, carinadas o no, con frecuencia apicalmenteemarginadas, aladas o sin alas; replo redondeado; septo completo o perforado;estilo ausente o conspicuo; estigma capitado, entero o rara vez bilobado;semillas 1 por lóculo, aladas, marginadas o sin alas, generalmente conspicuamentemucilaginosas cuando se humedecen; cotiledones incumbentes, rara vezacumbentes. Aprox. 250 spp. Cosmopolita, excepto Antárctica.

    Bibliografía: Hitchcock, C.L. Madroño8: 118-143 (1945). Thellung, A. Neue Denkschr. Allg. Schweiz. Ges. GesammtenNaturwiss. 41(1): 1-340 (1906).

  • Provided by: [G].Flora Mesoamericana
    • Source: [
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    • 1
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    LEPIDIUM L.

  • Provided by: [C].Flora de Nicaragua
    • Source: [
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    Annual or perennial herbs, glabrous or pubescent with simple trichomes; leaves entire to bi- or tripinnate, sessile or the lower petiolate; inflorescences terminating the upper branches, racemose, congested in flower, elongating in fruit; flowers small; petals lacking or mere vestiges or up to 3 mm. long, white to sulphur- yellow; stamens 2, 4 or 6, anthers nearly orbicular; siliques strongly flattened contrary to the narrow replum, usually rounded, glabrous to hirsute, apex scarcely notched and barely winged to deeply notched and prominently winged; styles present or absent; seeds 2, one in each locule; cotyledons accumbent to incumbent.

  • Provided by: [I].Flora de Panama
  • "Sep oblong to rotund; pet small, white (yellow), linear to spatulate, or often lacking; stamens 6, or by abortion 4 or 2; anthers small, oval; ovary flat; ovules 1 per locule, suspended; style short or none; stigma capitate; fr a silicle, flattened contrary to the narrow septum, thin or somewhat distended over the seeds, ovate to orbicular or obovate, often winged, commonly retuse, tipped by the persistent style or stigma; herbs with linear to elliptic, entire to pinnatifid lvs. 175, cosmop."

  • Provided by: [H].New York Botanical Garden
    • Source: [
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    • ]. 

    Morphology

    Ovary 2-ovulate.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Fruit a silicule with keeled or winged valves.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
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    Leaves entire to pinnate.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
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    Flowers small, whitish, in terminal and axillary, ebracteate racemes.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
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    Seeds usually 1 in each loculus, pendent from the apex.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Annual, biennial or perennial herbs, occasionally somewhat shrubby, glabrous or with simple hairs, usually with a slender tap-root.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Sepals not saccate.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Petals 4, sometimes vestigial or O. Stamens 2, 4 or 6.

  • Provided by: [B].Plants Of the World Online Portal - FZ
    • Source: [
    • 8
    • ]. 

    Seeds single in each locule, very finely reticulate, mucilaginous, usually reddish brown, rather flat, elliptic to obovate in outline, sometimes narrowly and unilaterally winged.

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Fruit a silicula, dehiscent, strongly compressed, narrowly septate, usually orbicular to elliptic in outline, entire or winged (especially distally), with the short style in an apical notch

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Ovary flat, dorsiventrally compressed, elliptic in outline; ovules 2

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Nectarial glands usually 6 or 4, adjacent to the bases of the lateral filaments

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Stamens 6, 4 or 2, median and/or lateral ones reduced; filaments usually linear to subulate

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Annual or perennial, small to medium-sized herbs or subshrubs with a taproot, often finely pubescent with unicellular simple hairs

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Stems erect or ascending, sometimes procumbent, freely branched

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Leaves membranous or coriaceous, simple to pinnatipartite

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Racemes terminal or axillary, ebracteate, densely corymbose, with numerous small to minute flowers, in fruit narrowly cylindrical, contracted or elongate but usually rather dense

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Sepals elliptic, not saccate, greenish

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
    • ]. 

    Petals usually whitish, somewhat longer or shorter than the sepals, often even lacking

  • Provided by: [F].Plants Of the World Online Portal - FTEA
    • Source: [
    • 9
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    Literature

    SELECTED REFERENCES Al-Shehbaz, I. A., K. Mummenhoff, and O. Appel. 2002. Cardaria, Coronopus, and Stroganowia are united with Lepidium (Brassicaceae). Novon 12: 5-11. Bowman, J. L., H. Brüggemann, J.-Y. Lee, and K. Mummenhoff. 1999. Evolutionary changes in floral structure within Lepidium L. (Brassicaceae). Int. J. Pl. Sci. 160: 917-929. Hitchcock, C. L. 1936. The genus Lepidium in the United States. Madroño 3: 265-300. Mulligan, G. A. 1961. The genus Lepidium in Canada. Madroño 16: 77-89. Mulligan, G. A. and C. Frankton. 1962. Taxonomy of the genus Cardaria with particular reference to the species introduced into North America. Canad. J. Bot. 40: 1411-1425. Mummenoff, K., H. Brüggemann, and J. L. Bowman. 2001. Chloroplast DNA phylogeny and biogeography of Lepidium (Brassicaceae). Amer. J. Bot. 88: 2051-2063. Muschler, R. 1908. Die Gattung Coronopus (L.) Gaertn. Bot. Jahrb. Syst. 41: 111-147. Thellung, A. 1906. Die Gattung Lepidium (L.) R. Br. Mitt. Bot. Mus. Univ. Zürich 28: 1-340.

  • Provided by: [E].Flora of North America @ efloras.org
    • Source: [
    • 11
    • ]. 

    Included Species

    Other Local Names

    NameLanguageCountry
    Peppergrass, pepperwort, cress, peppercress [Greek lepidion or lepidos, scale, alluding to appearance of fruit]

     Information From

    Brassicaceae
    World Flora Online Data. 2017.
    • A CC0 1.0 Universal (CC0 1.0).
    Plants Of the World Online Portal - FZ
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • B
    Flora de Nicaragua
    http://www.tropicos.org/projectwebportal.aspx?projectid=7&pagename=Home&langid=66
    WD Stevens, CU Ulloa, A Pool and OM Montiel. Missouri Botanical Garden Press, 2001
    • C Missouri Botanical Garden
    Flora Of CHina @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=2
    'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • D Missouri Botanical Garden
    Flora of North America @ efloras.org
    http://www.efloras.org/flora_page.aspx?flora_id=1
    'Flora of North America @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=1 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • E Flora of North America Association
    Plants Of the World Online Portal - FTEA
    https://www.kew.org/science/who-we-are-and-what-we-do/strategic-outputs-2020/plants-of-the-world-online
    http://www.plantsoftheworldonline.org/terms-and-conditions
    • F
    Flora Mesoamericana
    http://www.mobot.org/MOBOT/fm/
    Gerrit Davidse, Mario Sousa Sánchez, A. O. Chater, Universidad Nacional Autónoma de México. Instituto de Biología, Missouri Botanical Garden, Natural History Museum (London, England) UNAM, 1994
    • G Missouri Botanical Garden
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • H Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora de Panama
    http://www.tropicos.org/Project/PAC
    Robert E. Woodson, Jr. and Robert W. Schery Annals of the Missouri Botanical Garden Vol. 67, No. 4 (1980), pp. ii-xxxiii
    • I Missouri Botanical Garden
    World Flora Online consortium
    http://www.worldfloraonline.org/organisation/WFO
    World Flora Online Data. 2018.
    • J CC0 1.0 Universal (CC0 1.0).