1. Family: Asteraceae Bercht. & J.Presl
    1. Genus: Ambrosia L.
      1. Ambrosia artemisiifolia L.

        This species is accepted, and its native range is Subarctic America to U.S.A.

    [FTEA]

    Compositae, H. Beentje, C. Jeffrey & D.J.N. Hind. Flora of Tropical East Africa. 2005

    Habit
    Annual herb 0.4–1.2 m high, aromatic; stems pilose.
    Leaves
    Leaves alternate, ovate in outline, deeply lobed, the lobes again lobed, 3–13 cm long, 1.5–7 cm wide, the lobes obtuse with crenate margins, pubescent on both surfaces but more densely so beneath; petiole to 5 cm long.
    Florets
    Male capitula in racemes to 13 cm long, sessile or nearly so; involucre to 5 mm in diameter; florets 15–20, white, campanulate, 2–2.5 mm long. Female florets a few together below the base of the male inflorescence, involucre 5–6 mm long with 4–5 spines 2 mm long.
    Male
    Male capitula in racemes to 13 cm long, sessile or nearly so; involucre to 5 mm in diameter; florets 15–20, white, campanulate, 2–2.5 mm long.
    Female
    Female florets a few together below the base of the male inflorescence, involucre 5–6 mm long with 4–5 spines 2 mm long.
    Fruits
    Achenes dark grey, ovoid, 1.2 mm long, smooth; pappus absent.
    Figures
    Fig. 176 (p. 814).
    Habitat
    hores of the sea, lakes, dams, rivers, also in cultivations; 0–1200 m
    Distribution
    K5 T1 T5 T6 T7 U1 U2 U4 a widespread weed
    [FWTA]

    Compositae, C. D. Adams. Flora of West Tropical Africa 2. 1963

    Habit
    An erect, branched aromatic herb 1-4 ft. high, often woody below and sometimes almost shrubby
    Stem
    Striate stems, more or less hoary
    Inflorescences
    Flower-heads small, greenish-yellow forming rather dense spikes; flowering during the rains.

    Images

    Distribution

    Native to:

    Alabama, Alaska, Alberta, Arizona, Arkansas, Brazil South, British Columbia, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Labrador, Louisiana, Maine, Manitoba, Maryland, Masachusettes, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, North Dakota, Northwest Territorie, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Carolina, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming

    Introduced into:

    Afghanistan, Albania, Algeria, Austria, Baltic States, Belarus, Belgium, Botswana, Brazil North, Brazil Northeast, Brazil Southeast, Bulgaria, Corse, Czechoslovakia, Denmark, Egypt, France, Free State, Germany, Great Britain, Greece, Hawaii, Hungary, India, Iran, Ireland, Italy, Japan, Jawa, Kazakhstan, Kirgizstan, Korea, Krym, KwaZulu-Natal, Madeira, Mauritius, Netherlands, New South Wales, North Caucasus, Northern Provinces, Northwest European R, Norway, Peru, Poland, Portugal, Queensland, Romania, Sakhalin, Spain, Switzerland, Taiwan, Transcaucasus, Turkey, Ukraine, Uzbekistan, West Siberia, Western Australia, Yugoslavia, Zambia

    Ambrosia artemisiifolia L. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Sep 1, 2012 Gardner, G. [5526], Brazil K000895502
    Trail, J.W.H. [478], Brazil K001058995
    Trail, J.W.H. [4780], Brazil K001031191
    Ule, E. [5407], Brazil K001031190
    Eiten, G. [7893], Brazil K001031200
    Vauthier [s.n.], Brazil K001031198
    Castellanos, A. [23474], Brazil K001031197
    Gay, J. [s.n.] K001031195
    Miers, J. [3711], Brazil K001031196
    Harris [s.n.], Mexico K001306361
    Gouan [s.n.] K001031193
    Gouan [s.n.], Haiti K001031420
    Biedel [s.n.], Brazil K000895501
    Hoehne, W. [s.n.], Brazil K001031199
    Berlandier, J.L. [3039], Mexico K001306362
    Tweedie [s.n.], Brazil K001031192
    Glaziou [4031], Brazil K001031194
    Spruce, R. [s.n.], Brazil K001058996
    Spruce, R. [s.n.], Brazil K001058997
    Spruce, R. [417], Brazil K001058998
    Lindheimer, F. [430], Texas Ambrosia glandulosa K001065903
    Oct 1, 1996 Hind, D.J.N. [PCD3789], Bahia Ambrosia maritima K000053305
    Jul 1, 1996 Hind, D.J.N. [PCD3382], Bahia Ambrosia maritima K000053304
    Jul 1, 1996 Bautista, H.P. [PCD3457], Bahia Ambrosia maritima K000053306
    Jul 1, 1996 Bautista, H.P. [PCD3457], Bahia Ambrosia maritima K000053307
    Dec 9, 1907 Chevalier, A.J.B. [1114], Mali Ambrosia maritima K000391796
    Harley, R.M. [18070], Bahia Ambrosia maritima K000053309
    King, R.M. [8686], Bahia Ambrosia maritima K000053308
    Hagerup, O. [198], Mali Ambrosia maritima K000391797
    Roger dedit [s.n.], Senegal Ambrosia maritima K000410240
    Gemtchújnicov, I. D. [15], Bahia Ambrosia maritima K000053310

    First published in Sp. Pl. 2: 988 (1753)

    Accepted by

    • Wu, Z. & Raven, P.H. (eds.) in Flora of China Editorial Committee (2011). Asteraceae Flora of China 20-21: 1-992. Science Press (Beijing) & Missouri Botanical Garden Press (St. Louis).
    • Krasnoborov, I.M. (ed.) (2007). Flora of Siberia 13: 1-499. Scientific Publishers, Inc., Enfield, Plymouth.
    • Aver'ianov, L.V. & al. (2006). Illyustrirovannyi opredelitel' rastenii Leningradskoi oblasti: 1-799. Nauka, Moskva.
    • Flora of North America Editorial Committee in Flora of North America Editorial Committee (2006). Asteraceae Flora of North America North of Mexico 21: 1-616. Oxford University Press, New York, Oxford.
    • Flora of China Editorial Committee in Flora of China Editorial Committee (1988-2013). Checklist & Addendum Flora of China Science Press (Beijing) & Missouri Botanical Garden Press (St. Louis).

    Literature

    Kew Backbone Distributions
    • Forzza, R.C., Zappi, D. & Souza, V.C. (2016-continuously updated). Flora do Brasil 2020 em construção http://reflora.jbrj.gov.br/reflora/listaBrasil/ConsultaPublicaUC/ResultadoDaConsultaNovaConsulta.do.
    • Krasnoborov, I.M. (ed.) (2007). Flora of Siberia 13: 1-499. Scientific Publishers, Inc., Enfield, Plymouth.
    • Aver'ianov, L.V. & al. (2006). Illyustrirovannyi opredelitel' rastenii Leningradskoi oblasti: 1-799. Nauka, Moskva.
    • Flora of North America Editorial Committee in Flora of North America Editorial Committee (2006). Asteraceae Flora of North America North of Mexico 21: 1-616. Oxford University Press, New York, Oxford.
    • Flora of China Editorial Committee in Flora of China Editorial Committee (1988-2013). Checklist & Addendum Flora of China Science Press (Beijing) & Missouri Botanical Garden Press (St. Louis).

    Sources

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

    Flora of West Tropical Africa
    Flora of West Tropical 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