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

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

    [FTEA]

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

    Anthers
    Anthers short with ovate apical appendages.
    Style
    Style-arms clavate, papillate
    Fruits
    Achenes black, oblong, 5-ribbed, with short setae on the ribs; carpopodium large, white, asymmetrical; pappus of ± 5 awned scales, or reduced, awnless and occasionally absent.
    Habit
    Annuals or short-lived sub-shrubby perennials
    Leaves
    Leaves opposite or sub-opposite apically, glandular-punctate beneath
    Inflorescences
    Inflorescence of loose to dense terminal corymbs
    Involucre
    Involucre campanulate; phyllaries bi-seriate, equal; receptacle broadly conical, epaleate
    Corolla
    Corollas tubular to funnel-shaped, tube externally glandular-stipitate, 5-lobed.

    Images

    Distribution

    Native to:

    Arizona, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil Southeast, Brazil West-Central, Cayman Is., Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Florida, Guatemala, Honduras, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, New Mexico, Nicaragua, Panamá, Texas, Venezuela, West Himalaya

    Introduced into:

    Alabama, Andaman Is., Angola, Argentina Northeast, Argentina Northwest, Azores, Bahamas, Belarus, Belgium, Benin, Botswana, Brazil South, Bulgaria, Burkina, California, Cameroon, Canary Is., Cape Provinces, Cape Verde, Caroline Is., Central African Repu, Chad, Chagos Archipelago, China North-Central, China South-Central, China Southeast, Christmas I., Congo, Connecticut, Cook Is., East Himalaya, Egypt, Ethiopia, Fiji, France, French Guiana, Gabon, Georgia, Germany, Great Britain, Guinea-Bissau, Gulf of Guinea Is., Guyana, Hainan, Haiti, Hawaii, Hungary, India, Italy, Ivory Coast, Jamaica, Jawa, Kazakhstan, Kazan-retto, Kentucky, Korea, Krym, KwaZulu-Natal, Laccadive Is., Laos, Leeward Is., Madagascar, Madeira, Malaya, Maldives, Mali, Marianas, Marquesas, Marshall Is., Maryland, Masachusettes, Mauritania, Mauritius, Mississippi, Missouri, Mozambique, Myanmar, Nansei-shoto, Nepal, New Caledonia, New South Wales, Nicobar Is., Niue, Norfolk Is., North Carolina, Northern Provinces, Northern Territory, Ogasawara-shoto, Oman, Pakistan, Palestine, Paraguay, Peru, Philippines, Poland, Portugal, Primorye, Puerto Rico, Queensland, Rodrigues, Réunion, Samoa, Saudi Arabia, Senegal, Seychelles, Society Is., Socotra, South Carolina, South China Sea, Sri Lanka, Sudan, Sumatera, Suriname, Swaziland, Taiwan, Togo, Tonga, Transcaucasus, Trinidad-Tobago, Tuamotu, Tubuai Is., Turkmenistan, Turks-Caicos Is., Ukraine, Uruguay, Uzbekistan, Venezuelan Antilles, Vietnam, Windward Is., Yugoslavia, Zambia, Zimbabwe

    Ageratum L. appears in other Kew resources:

    First published in Sp. Pl.: 839 (1753)

    Accepted by

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

    Literature

    Flora of West Tropical Africa
    • —F.T.A. 3: 300.
    Flora of Tropical East Africa
    • Bremer et al. in Asterac., Clad. & Class.: 649 (1994)
    • R.M. King & H. Rob., Genera of the Eupatorieae: 142 (1987)
    • V.S. Sharma in F.R. 98: 557 (1987)
    • M.F. Johnson in Ann. Missouri Bot. Gard. 58(1): 6 (1971)
    • Sp. Pl.: 839 (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