1. Family: Asteraceae Bercht. & J.Presl
    1. Parthenium L.

      1. This genus is accepted, and is native to Southern America and Northern America..

    [FTEA]

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

    Habit
    Herbs or shrubs
    Leaves
    Leaves alternate
    Capitulum
    Capitula in terminal panicles, radiate, heterogamous; involucre with phyllaries in 2–3 series; receptacle paleate
    Florets
    Female florets with minute rays; disc florets infundibuliform; anthers with apical appendage, obtuse at base; style of ray florets bifid, of disc florets entire and obtuse
    Female
    Female florets with minute rays; disc florets infundibuliform; anthers with apical appendage, obtuse at base; style of ray florets bifid, of disc florets entire and obtuse
    Fruits
    Achenes of ray florets compressed, keeled, enveloped by phyllary and two paleae; pappus of 2 recurved awns enclosed in the paleae.

    Images

    Distribution

    Native to:

    Alabama, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Aruba, Bahamas, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil Southeast, Brazil West-Central, Cayman Is., Colombia, Colorado, Connecticut, Costa Rica, Cuba, Ecuador, French Guiana, Georgia, Guatemala, Guyana, Honduras, Illinois, Indiana, Iowa, Jamaica, Kansas, Kentucky, Leeward Is., Louisiana, Maryland, Masachusettes, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Netherlands Antilles, Nevada, New Mexico, New York, Nicaragua, North Carolina, Ohio, Oklahoma, Panamá, Paraguay, Pennsylvania, Puerto Rico, South Carolina, Suriname, Tennessee, Texas, Trinidad-Tobago, Turks-Caicos Is., Uruguay, Utah, Venezuela, Venezuelan Antilles, Virginia, West Virginia, Windward Is., Wisconsin, Wyoming

    Introduced into:

    Cape Verde, China South-Central, China Southeast, Delaware, District of Columbia, Dominican Republic, East Himalaya, Eritrea, Ethiopia, Florida, Haiti, Hawaii, India, Japan, Korea, Krym, KwaZulu-Natal, Laos, Madagascar, Mauritius, Mozambique, Nepal, New Caledonia, New Jersey, New South Wales, Northern Provinces, Northern Territory, Palestine, Poland, Queensland, Rodrigues, Réunion, Seychelles, Society Is., Swaziland, Tadzhikistan, Taiwan, Transcaucasus, Ukraine, Vietnam, Zimbabwe

    Parthenium L. appears in other Kew resources:

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

    Accepted by

    • Roskov Y. & al. (eds.) (2018). Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.

    Literature

    Flora of Tropical East Africa
    • Sp. Pl.: 988 (1753)

    Sources

    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