1. Family: Brassicaceae Burnett
    1. Lepidium L.

      1. This genus is accepted, and is native to Asia-Tropical, Europe, Africa, Falkland Island, Pacific, Southern America, Northern America, Australasia and Asia-Temperate..

    [FTEA]

    Cruciferae, Bengt Jonsell (University of Stockholm). Flora of Tropical East Africa. 1982

    Habit
    Annual or perennial, small to medium-sized herbs or subshrubs with a taproot, often finely pubescent with unicellular simple hairs
    Stem
    Stems erect or ascending, sometimes procumbent, freely branched
    Leaves
    Leaves membranous or coriaceous, simple to pinnatipartite
    Inflorescences
    Racemes terminal or axillary, ebracteate, densely corymbose, with numerous small to minute flowers, in fruit narrowly cylindrical, contracted or elongate but usually rather dense
    Calyx
    Sepals elliptic, not saccate, greenish
    Corolla
    Petals usually whitish, somewhat longer or shorter than the sepals, often even lacking
    Stamens
    Stamens 6, 4 or 2, median and/or lateral ones reduced; filaments usually linear to subulate
    Nectaries
    Nectarial glands usually 6 or 4, adjacent to the bases of the lateral filaments
    Ovary
    Ovary flat, dorsiventrally compressed, elliptic in outline; ovules 2
    Fruits
    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
    Seeds
    Seeds single in each locule, very finely reticulate, mucilaginous, usually reddish brown, rather flat, elliptic to obovate in outline, sometimes narrowly and unilaterally winged.
    [FZ]

    Cruciferae, A. W. Exell. Flora Zambesiaca 1:1. 1960

    Ovary
    Ovary 2-ovulate.
    Fruits
    Fruit a silicule with keeled or winged valves.
    Seeds
    Seeds usually 1 in each loculus, pendent from the apex.
    Habit
    Annual, biennial or perennial herbs, occasionally somewhat shrubby, glabrous or with simple hairs, usually with a slender tap-root.
    Leaves
    Leaves entire to pinnate.
    Flowers
    Flowers small, whitish, in terminal and axillary, ebracteate racemes.
    Calyx
    Sepals not saccate.
    Corolla
    Petals 4, sometimes vestigial or O. Stamens 2, 4 or 6.
    [FZ]

    Cruciferae, A. W. Exell. Flora Zambesiaca 1:1. 1960

    Habit
    Annual, biennial or perennial herbs usually ± pilose with simple hairs.
    Leaves
    Leaves pinnatisect or entire.
    Flowers
    Flowers small, whitish, in terminal racemes which appear to be leaf-opposed owing to sympodial growth.
    Calyx
    Sepals ± spreading, not saccate.
    Corolla
    Petals 4 or O. Stamens 6, 5, 4 or 2.
    Ovary
    Ovary with 2 ovules.
    Fruits
    Fruit 2-lobed, dividing vertically into 1-seeded halves.
    [FTEA]

    Cruciferae, Bengt Jonsell (University of Stockholm). Flora of Tropical East Africa. 1982

    Habit
    Annual to perennial low herbs with a taproot, glabrous or with fine, often papillose, simple hairs
    Stem
    Stems often several, prostrate, ascending or erect, with numerous branches often overtopping the racemes
    Leaves
    Leaves thin, entire to bipinnate
    Inflorescences
    Racemes numerous, ebracteate, often supra-axillary and leaf-opposed because of sympodial shoot growth, small and densely corymbose with numerous minute flowers; in fruit narrowly cylindrical and rather dense
    Calyx
    Sepals spreading, rather flat, elliptic, greenish with white or reddish margins
    Corolla
    Petals whitish, somewhat longer or shorter than the petals, or lacking
    Stamens
    Stamens 6, 4 or 2, with linear or basally widened filaments
    Nectaries
    Nectarial glands tubercle-shaped to elongate, sometimes lacking
    Ovary
    Ovary flat, dorsiventrally compressed, with 2 ovules and short to rudimentary style
    Fruits
    Fruit a silicula, compressed, ± transversely elliptic in outline, didymous, i.e. divided along the very narrow septum into 2 rounded halves, which are usually spread as 1-seeded nutlets (outside E. Africa sometimes with completely indehiscent siliculae)
    Seeds
    Seeds flattened, orange to reddish brown, elliptic in outline.

    Images

    Distribution

    Native to:

    Afghanistan, Alabama, Alaska, Albania, Alberta, Algeria, Altay, Angola, Antipodean Is., Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Austria, Azores, Bahamas, Baleares, Baltic States, Bangladesh, Belarus, Belgium, Belize, Bolivia, Botswana, Brazil Northeast, Brazil South, Brazil Southeast, British Columbia, Bulgaria, Buryatiya, California, Canary Is., Cape Provinces, Cayman Is., Central European Rus, Chad, Chatham Is., Chile Central, Chile North, Chile South, China North-Central, China South-Central, China Southeast, Colombia, Colorado, Connecticut, Cook Is., Corse, Costa Rica, Cuba, Czechoslovakia, Delaware, Denmark, District of Columbia, Dominican Republic, East Aegean Is., East European Russia, Ecuador, Egypt, El Salvador, Eritrea, Ethiopia, Falkland Is., Finland, Florida, France, Free State, Galápagos, Georgia, Germany, Great Britain, Greece, Guatemala, Gulf States, Haiti, Honduras, Hungary, Idaho, Illinois, Indiana, Inner Mongolia, Iowa, Iran, Ireland, Irkutsk, Italy, Jamaica, Japan, Juan Fernández Is., Kansas, Kazakhstan, Kentucky, Kenya, Kermadec Is., Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Kriti, Krym, Kuwait, KwaZulu-Natal, Labrador, Leeward Is., Lesotho, Libya, Line Is., Louisiana, Madagascar, Madeira, Maine, Manchuria, Manitoba, Maryland, Masachusettes, Mauritania, Mexican Pacific Is., Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Mongolia, Montana, Morocco, Mozambique, Mozambique Channel I, Namibia, Nebraska, Nepal, Netherlands, Nevada, New Brunswick, New Caledonia, New Guinea, New Hampshire, New Jersey, New Mexico, New South Wales, New York, New Zealand North, New Zealand South, Newfoundland, Nicaragua, Norfolk Is., North Carolina, North Caucasus, North Dakota, North European Russi, Northern Provinces, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Ohio, Oklahoma, Oman, Ontario, Oregon, Pakistan, Palestine, Panamá, Paraguay, Pennsylvania, Peru, Poland, Portugal, Primorye, Prince Edward I., Puerto Rico, Queensland, Québec, Rhode I., Romania, Sakhalin, Sardegna, Saskatchewan, Saudi Arabia, Sicilia, Sinai, South Carolina, South Dakota, South European Russi, Spain, Sudan, Swaziland, Sweden, Switzerland, Tadzhikistan, Tanzania, Tennessee, Texas, Tibet, Tokelau-Manihiki, Trinidad-Tobago, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Turks-Caicos Is., Tuva, Uganda, Ukraine, Uruguay, Utah, Uzbekistan, Venezuela, Venezuelan Antilles, Vermont, Virginia, Washington, West Siberia, West Virginia, Western Australia, Windward Is., Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yemen, Yugoslavia, Yukon, Zambia, Zaïre, Zimbabwe

    Extinct in:

    Hawaii

    Introduced into:

    Amsterdam-St.Paul Is, Amur, Ascension, Bermuda, Brazil West-Central, Burkina, Cape Verde, Central African Repu, Chita, Cocos (Keeling) Is., Desventurados Is., Easter Is., French Guiana, Guinea, Gulf of Guinea Is., India, Kamchatka, Kerguelen, Magadan, Mali, Mauritius, Niger, Nigeria, Niue, Ogasawara-shoto, Rodrigues, Rwanda, Réunion, Selvagens, St.Helena, Suriname, Taiwan, Tonga, Tristan da Cunha, Western Sahara

    Lepidium L. appears in other Kew resources:

    First published in Sp. Pl.: 643 (1753)

    Accepted by

    • Al-Shehbaz, I.A. (2010). A synopsis of the South American Lepidium (Brassicaceae) Darwiniana 48: 141-167.
    • Jalas, J., Suominen, J. & Lampinen, R. (eds.) (1996). Atlas Florae Europaeae. Distribution of vascular plants in Europe 11: 1-310.

    Literature

    Flora of West Tropical Africa
    • —F.T.A. 1: 68.
    Flora Zambesiaca
    • Gen. Pl. ed. 5: 291 (1754).
    • Sp. Pl. 2: 643 (1753)
    Flora of Tropical East Africa
    • Thell., Die Gattung Lepidium (1906)
    • L., Gen. Pl., ed. 5: 291 (1754)
    • Sp. Pl.: 644 (1753)

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Neotropikey
    Milliken, W., Klitgard, B. and Baracat, A. (2009 onwards), Neotropikey - Interactive key and information resources for flowering plants of the Neotropics.
    http://creativecommons.org/licenses/by/3.0