1. Family: Amaranthaceae Juss.
    1. Alternanthera Forssk.

      1. This genus is accepted, and its native range is Tropics & Subtropics.

    [FTEA]

    Amaranthaceae, C.C. Townsend. Flora of Tropical East Africa. 1985

    Habit
    Annual or perennial herbs, prostrate or erect to floating or scrambling, with entire opposite leaves
    Inflorescences
    Inflorescences of sessile or pedunculate heads or short spikes, axillary, solitary or clustered, bracteate
    Flowers
    Flowers hermaphrodite, solitary in the axil of a bract, bibracteolate, bracts persistent, the perianth falling with the fruit, bracteoles persistent or not
    Perianth
    Perianth-segments 5, free, equal or unequal, glabrous or furnished with smooth or denticulate hairs
    Stamens
    Stamens 2–5, some occasionally without anthers; filaments distinctly monadelphous at the base into a cup or tube, alternating with large and dentate or laciniate to very small pseudostaminodes (rarely these obsolete); anthers unilocular
    Pistil
    Ovary with a single pendulous ovule; style short; stigma capitate
    Fruits
    Fruit an indehiscent capsule, thin-walled or sometimes corky
    Seeds
    Seeds ± lenticular.
    [FZ]

    Amaranthaceae, C. C. Townsend. Flora Zambesiaca 9:1. 1988

    Habit
    Annual or perennial herbs, prostrate or erect to floating or scrambling, with entire, opposite leaves.
    Inflorescences
    Inflorescences of sessile or pedunculate heads or short spikes, axillary, solitary or clustered, bracteate.
    Flowers
    Flowers hermaphrodite, solitary in the axil of each bract, bibracteolate, bracts persistent, the perianth falling with the fruit, bracteoles persistent or not.
    Perianth
    Perianth segments 5, free, equal or unequal, glabrous or furnished with smooth or denticulate hairs.
    Androecium
    Stamens 2–5, some occasionally without anthers, the filaments distinctly monadelphous at the base into a cup or tube, alternating with large and dentate or laciniate to very small pseudostaminodes (rarely these obsolete), anthers unilocular.
    Style
    Style short, stigma capitate.
    Ovary
    Ovary with a single pendulous ovule.
    Fruits
    Fruit an indehiscent capsule, thin-walled or sometimes corky, seeds more or less lenticular.

    Images

    Distribution

    Native to:

    Andaman Is., Angola, Argentina Northeast, Argentina Northwest, Argentina South, Aruba, Assam, Bahamas, Bangladesh, Belize, Benin, Bermuda, Bolivia, Borneo, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Cabinda, Cambodia, Cameroon, Cape Provinces, Cayman Is., Chile Central, Chile North, China South-Central, China Southeast, Colombia, Congo, Costa Rica, Cuba, Dominican Republic, East Himalaya, Ecuador, El Salvador, Florida, French Guiana, Gabon, Galápagos, Gambia, Ghana, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Guyana, Haiti, Honduras, India, Ivory Coast, Jamaica, Jawa, Laccadive Is., Laos, Leeward Is., Lesser Sunda Is., Liberia, Malaya, Mali, Maluku, Mauritania, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Myanmar, Nepal, Netherlands Antilles, New Guinea, New South Wales, New Zealand North, New Zealand South, Nicaragua, Nigeria, Norfolk Is., Northern Territory, Panamá, Paraguay, Peru, Philippines, Puerto Rico, Queensland, Saudi Arabia, Senegal, Sierra Leone, Solomon Is., South Australia, Sulawesi, Sumatera, Suriname, Taiwan, Tasmania, Thailand, Togo, Trinidad-Tobago, Turks-Caicos Is., Uruguay, Venezuela, Venezuelan Antilles, Victoria, Vietnam, West Himalaya, Western Australia, Windward Is., Yemen, Zaïre

    Introduced into:

    Alabama, Aldabra, Algeria, Arizona, Arkansas, Ascension, Azores, Belgium, Botswana, Burkina, Burundi, California, Canary Is., Cape Verde, Caroline Is., Central African Repu, Chad, China North-Central, Christmas I., Cook Is., Delaware, Egypt, Eritrea, Ethiopia, Fiji, Free State, Georgia, Gulf States, Hainan, Hawaii, Illinois, Italy, Japan, Kentucky, Kenya, KwaZulu-Natal, Lesotho, Louisiana, Madeira, Malawi, Marianas, Marquesas, Marshall Is., Maryland, Mauritius, Mississippi, Mozambique, Namibia, Nauru, New Caledonia, New Jersey, New Mexico, New York, Nicobar Is., Niger, North Carolina, Northern Provinces, Oklahoma, Oman, Pakistan, Pennsylvania, Pitcairn Is., Rodrigues, Rwanda, Réunion, Samoa, Seychelles, Sicilia, Society Is., Somalia, South Carolina, Spain, St.Helena, Sudan, Swaziland, Tanzania, Tennessee, Texas, Tokelau-Manihiki, Tonga, Tuamotu, Tubuai Is., Tunisia, Tuvalu, Uganda, Vanuatu, Virginia, Wallis-Futuna Is., West Himalaya, Zambia, Zimbabwe

    Alternanthera Forssk. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Harley, R.M. [22198], Brazil K001207399
    Harley, R.M. [19057/A], Brazil K001207400
    Eiten, G. [10386], Brazil K001207401

    First published in Fl. Aegypt.-Arab.: 28 (1775)

    Accepted by

    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 529. MIM, Deurne.

    Literature

    Flora of West Tropical Africa
    • —F.T.A. 6, 1: 72.
    Flora Zambesiaca
    • Fl. Aegypt-Arab.: 28 (1775).
    Flora of Tropical East Africa
    • Fl. Aegypt.-Arab.: 28 (1775)

    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

    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 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