1. Family: Urticaceae Juss.
    1. Urtica L.

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

    [FTEA]

    Urticaceae, I. Friis University of Copenhagen, Denmark. Flora of Tropical East Africa. 1989

    Habit
    Annual or perennial herbs, monoecious or dioecious
    Stem
    Stems with stinging and sometimes stiff hairs
    Leaves
    Leaves opposite, petiolate, simple; stipules lateral, free, or interpetiolar, fused; cystoliths punctiform
    Inflorescences
    Inflorescences axillary, mostly shortly pedunculate, often paired in each leaf-axil, bisexual or unisexual lax cymose panicles
    Flowers
    Flowers unisexual, 4-merous, usually clustered in small cymose glomerules Female flowers: tepals free, in 2 ± unequal pairs; staminodes absent; ovary ovoid, laterally compressed, symmetrical; stigma sessile, penicillate Male flowers: tepals free, in 2 subequal pairs; rudimentary ovary present
    Male
    Male flowers: tepals free, in 2 subequal pairs; rudimentary ovary present
    Female
    Female flowers: tepals free, in 2 ± unequal pairs; staminodes absent; ovary ovoid, laterally compressed, symmetrical; stigma sessile, penicillate
    Fruits
    Achene enclosed in or released from the persistent perianth, lenticular with a ± raised central area on each face.

    Images

    Distribution

    Native to:

    Afghanistan, Alabama, Alaska, Albania, Alberta, Algeria, Altay, Amur, Antipodean Is., Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, Bolivia, Brazil South, British Columbia, Bulgaria, Burundi, Buryatiya, California, Canary Is., Cape Provinces, Central European Rus, Chile Central, Chile North, Chile South, China North-Central, China South-Central, China Southeast, Chita, Colombia, Colorado, Connecticut, Corse, Costa Rica, Cyprus, Czechoslovakia, Delaware, Denmark, Dominican Republic, East Aegean Is., East European Russia, East Himalaya, Ecuador, Egypt, Eritrea, Ethiopia, Finland, Florida, France, Free State, Føroyar, Georgia, Germany, Great Britain, Greece, Guatemala, Haiti, Hungary, Iceland, Idaho, Illinois, Indiana, Iowa, Iraq, Ireland, Irkutsk, Italy, Japan, Jawa, Juan Fernández Is., Kamchatka, Kansas, Kazakhstan, Kentucky, Kenya, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Kriti, Krym, Kuril Is., KwaZulu-Natal, Labrador, Lebanon-Syria, Lesotho, Lesser Sunda Is., Libya, Louisiana, Madeira, Magadan, Maine, Maluku, Manchuria, Manitoba, Maryland, Masachusettes, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Mongolia, Montana, Morocco, Nebraska, Nepal, Netherlands, Nevada, New Brunswick, New Guinea, New Hampshire, New Jersey, New Mexico, New South Wales, New York, New Zealand North, New Zealand South, Newfoundland, North Carolina, North Dakota, North European Russi, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Palestine, Panamá, Paraguay, Pennsylvania, Peru, Philippines, Poland, Portugal, Primorye, Prince Edward I., Québec, Rhode I., Romania, Rwanda, Sakhalin, Sardegna, Saskatchewan, Selvagens, Sicilia, Sinai, Socotra, Somalia, South Australia, South Carolina, South Dakota, South European Russi, Spain, Sudan, Sumatera, Sweden, Switzerland, Taiwan, Tanzania, Tasmania, Tennessee, Texas, Tibet, Tunisia, Turkey, Turkey-in-Europe, Tuva, Uganda, Ukraine, Uruguay, Utah, Venezuela, Vermont, Victoria, Vietnam, Virginia, Washington, West Himalaya, West Siberia, West Virginia, Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yugoslavia, Yukon, Zaïre

    Introduced into:

    Bermuda, Brazil Northeast, Brazil Southeast, Cuba, District of Columbia, Falkland Is., Galápagos, Greenland, India, Namibia, Norfolk Is., Northern Provinces, South Georgia, St.Helena, Tristan da Cunha

    Urtica L. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Porter, G. [Cat. no. 7425], Malaysia K001127325

    First published in Sp. Pl.: 983 (1753)

    Accepted by

    • Tutin, T.G. & al. (eds.) (1993). Flora Europaea ed. 2, 1: 1-581. Cambridge University Press.

    Literature

    Flora of Tropical East Africa
    • G.F.P. 2: 181 (1967)
    • Engl. in E. & P. Pf. 3(1): 104 (1888)
    • G.P. 3: 381 (1880)
    • L., Gen. Pl., ed. 5: 423 (1754)
    • Sp. Pl.: 983 (1753)

    Sources

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

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. 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 2018. 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