1. Family: Apocynaceae Juss.
    1. Alstonia R.Br.

      1. This genus is accepted, and its native range is Mexico to Central America, Tropical Africa to S. Pacific.

    [FTEA]

    Apocynaceae, E.A. Omino. Flora of Tropical East Africa. 2002

    Habit
    Trees or shrubs; branches verticillate, in whorls of 4–5
    Leaves
    Leaves verticillate or opposite (not in our area), petiolate, with or without intrapetiolar stipules which are often adnate to the petiole; colleters present in leaf axils
    Inflorescences
    Inflorescence terminal, thyrsoid or compound, subumbellate, in whorls of 1–5
    Flowers
    Flowers 5-merous, actinomorphic
    Corolla
    Corolla white, yellow or red; tube cylindrical, widened around anthers, thickened at the throat; lobes spreading, overlapping to the left
    Stamens
    Stamens included; anthers basifixed, introrse
    Disc
    Disk present, free or adnate to the ovary, often indistinct. Ovary 2-celled, apocarpous or syncarpous, ovules numerous, style terete, stigma bifid, subtended by a cylindrical or slightly conical clavuncula
    Fruits
    Fruit of two follicles, free or connate at the base
    Seeds
    Seeds numerous, pubescent, ciliate, sometimes winged.

    Images

    Distribution

    Native to:

    Andaman Is., Assam, Bangladesh, Benin, Bismarck Archipelago, Borneo, Burkina, Cabinda, Cambodia, Cameroon, Central African Repu, China South-Central, China Southeast, Congo, Cook Is., Costa Rica, East Himalaya, El Salvador, Equatorial Guinea, Ethiopia, Fiji, Gabon, Gambia, Ghana, Guatemala, Guinea, Guinea-Bissau, Hainan, Honduras, India, Ivory Coast, Jawa, Laccadive Is., Laos, Lesser Sunda Is., Liberia, Malaya, Maluku, Marquesas, Mexico Central, Mexico Gulf, Mexico Southeast, Mexico Southwest, Myanmar, Nepal, New Caledonia, New Guinea, New South Wales, Nicaragua, Nicobar Is., Nigeria, Northern Territory, Pakistan, Panamá, Philippines, Queensland, Samoa, Santa Cruz Is., Senegal, Sierra Leone, Society Is., Solomon Is., Sri Lanka, Sudan, Sulawesi, Sumatera, Tanzania, Thailand, Togo, Tonga, Uganda, Vanuatu, Vietnam, West Himalaya, Western Australia, Zaïre

    Introduced into:

    Trinidad-Tobago

    Alstonia R.Br. appears in other Kew resources:

    First published in Asclepiadeae: 64 (1810)

    Accepted by

    • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.

    Literature

    Flora of West Tropical Africa
    • Monachino in Pacif. Sci. 3, 2: 139 (1949). Nom. cons.
    • —F.T.A. 4, 1: 120
    Flora of Tropical East Africa
    • de Jong in Meded. Landbouwhogeschool 79 (13): 2–16 (1979)
    • K. Schum. in E. & P. Pf. 4 (2): 138 (1895)
    • in Mem. Wern. Soc. 1: 75 (1811), nom. conserv.

    Sources

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

    Interactive Key to Seed Plants of Malesia and Indo-China
    The Malesian Key Group (2010) Interactive Key to Seed Plants of Malesia and Indo-China (Version 2.0, 28 Jul 2010) The Nationaal Herbarium Nederland Leiden and The Royal Botanic Gardens Kew

    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