1. Family: Malvaceae Juss.
    1. Pterygota Schott & Endl.

      1. This genus is accepted, and is native to Asia-Tropical, Africa, Southern America and Asia-Temperate..

    [FTEA]

    Sterculiaceae, Martin Cheek & Laurence Dorr; Nesogordonia, Laurence Dorr, Lisa Barnett. Flora of Tropical East Africa. 2007

    Habit
    Monoecious, deciduous or evergreen trees, with stellate indumentum
    Wood
    Wood white, soft and light
    Leaves
    Leaves alternate, simple, entire; domatial pockets sometimes present; petiole usually swollen and kneed at base and apex; stipules early caducous
    Inflorescences
    Inflorescences several per stem in the uppermost axils, bearing short partial peduncles, partial peduncles 1-several flowered; bracts caducous; pedicels articulated with the partial peduncle. Flowers actinomorphic, brown and purple, perianth of a single whorl of five perianth lobes united at base; androgynophore terete
    Flowers
    Male flowers with 5–20 anthers arranged in a dense head of one or two whorls or spirally arranged, concealing vestigial carpels Female flowers fewer, usually at the ends of the inflorescence, androgynophore abbreviated, anthers often as numerous and as large as the male, but not dehiscing; ovary of five coherent, ovoid carpels each with a filamentous style and truncate stigma, carpels each with numerous ovules in two superposed ranks
    Male
    Male flowers with 5–20 anthers arranged in a dense head of one or two whorls or spirally arranged, concealing vestigial carpels
    Female
    Female flowers fewer, usually at the ends of the inflorescence, androgynophore abbreviated, anthers often as numerous and as large as the male, but not dehiscing; ovary of five coherent, ovoid carpels each with a filamentous style and truncate stigma, carpels each with numerous ovules in two superposed ranks
    Fruits
    Fruit with the carpels strongly apocarpous and stipitate; carpels large, thickly woody, dehiscent along a ventral suture revealing 20–30 seeds arranged in two files, one on each side of the suture.
    Seeds
    Seeds dry, large, the distal end produced into a papery or spongy wing.
    Note
    Pantropical, 15–20 species.
    [FZ]

    Sterculiaceae, H. Wild. Flora Zambesiaca 1:2. 1961

    Habit
    Trees with entire or palmatilobed, petiolate leaves.
    Flowers
    Flowers unisexual, in axillary panicles. Female flowers with a perianth as in the male; ovary of 5 sessile or shortly stipitate coherent carpels; styles connate, stigmas 5, recurved; ovules ?. Male flowers: androphore with an apical ring of anthers in one or more rows.
    Calyx
    Calyx campanulate, 5-lobed.
    Corolla
    Petals absent.
    Fruits
    Fruit of 1–5 large woody follicles.
    Seeds
    Seeds many, with a large wing; endosperm present.

    Images

    Distribution

    Native to:

    Andaman Is., Bangladesh, Benin, Bolivia, Borneo, Brazil Northeast, Brazil Southeast, Burundi, Cambodia, Cameroon, Central African Repu, China South-Central, Colombia, Comoros, Congo, Costa Rica, East Himalaya, Gabon, Ghana, Guinea, Hainan, Honduras, India, Ivory Coast, Jawa, Madagascar, Malaya, Mozambique, Myanmar, New Guinea, Nicobar Is., Nigeria, Panamá, Peru, Philippines, Rwanda, Sierra Leone, Tanzania, Thailand, Togo, Uganda, Venezuela, Vietnam, Zambia, Zaïre

    Introduced into:

    Cuba, Florida, Gulf of Guinea Is., Trinidad-Tobago, Windward Is.

    Pterygota Schott & Endl. appears in other Kew resources:

    First published in Melet. Bot.: 32 (1832)

    Literature

    Flora of West Tropical Africa
    • Meletem. Bot. 32 (1832).
    Flora Zambesiaca
    • Melet. Bot.: 32 (1832).
    Flora of Tropical East Africa
    • Melet. Bot. 32 (1832)

    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

    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