1. Family: Melastomataceae Juss.
    1. Tristemma Juss.

      1. This genus is accepted, and is native to Africa..

    [FZ]

    Melastomataceae, R. & A. Fernandes. Flora Zambesiaca 4. 1978

    Habit
    Annual or perennial herbs or shrubs, with sharply 4-angular or -winged stems and branches.
    Leaves
    Leaves petiolate, opposite.
    Flowers
    Flowers 5-merous, sessile or subsessile, in terminal heads surrounded by leaves and leafy bracts; inner bracts coriaceous, chaffy or membranous.
    Receptacle
    Receptacle ovoid or ovoid-oblong, glabrous or densely setose on the upper half or with 1–6 rings of bristles.
    Calyx
    Sepals persistent, ± reflexed, ciliate at the margin; intersepalar segments 0.
    Corolla
    Petals mauve, pink or blue-violet, rarely white.
    Stamens
    Stamens 10, subequal; anthers lanceolate, all similar, yellow; pedoconnective short with an anterior 2-lobed or 2-fid appendage at the base.
    Ovary
    Ovary 5-locular, adnate to the receptacle all around to above the middle.
    Fruits
    Capsule 5-valved, with fleshy placentas, usually splitting irregularly.
    Seeds
    Seeds numerous, cochleate.
    [FTEA]

    Melastomataceae, G. E. Wickens. Flora of Tropical East Africa. 1975

    Habit
    Shrubs or woody herbs, erect or prostrate
    Leaves
    Leaves entire, 5–7-nerved, petiolate
    Inflorescences
    Inflorescence terminal, 1–3– or many-flowered; flowers 5-merous, sessile, usually enclosed by several large persistent bracts
    Calyx
    Calyx-tube tubular or campanulate, usually with 1 or more rings of bristles, rarely glabrous; lobes persistent, reflexed; intersepalar appendages absent
    Stamens
    Stamens equal or subequal; anthers narrowly oblong to linear-subulate; connective not or only shortly produced below the anther, with 2 small anterior appendages
    Ovary
    Ovary mostly adherent to the calyx-tube, 5-locular, apex usually setose
    Fruits
    Fruit indehiscent
    Seeds
    Seeds cochleate.

    Images

    Distribution

    Native to:

    Angola, Benin, Burkina, Cameroon, Central African Repu, Chad, Comoros, Congo, Equatorial Guinea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Gulf of Guinea Is., Ivory Coast, Kenya, Liberia, Madagascar, Mozambique, Nigeria, Rwanda, Sierra Leone, Sudan, Tanzania, Togo, Uganda, Zambia, Zaïre, Zimbabwe

    Introduced into:

    Mauritius, Queensland, Réunion

    Tristemma Juss. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2006 Nana felicite [54], Cameroon K000023199
    Manning, S.D. [1227], Cameroon K000050141

    First published in Gen. Pl.: 329 (1789)

    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. 2: 445.
    Flora Zambesiaca
    • Gen. Pl.: 329 (1789).
    Flora of Tropical East Africa
    • Gen.: 329 (1789)

    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.

    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