1. Family: Rubiaceae Juss.
    1. Sericanthe Robbr.

      1. This genus is accepted, and its native range is Tropical & S. Africa.

    [FTEA]

    Rubiaceae, B. Verdcourt. Flora of Tropical East Africa. 1976

    Habit
    Shrubs or sometimes small trees (outside Flora area one suffrutescent species)
    Leaves
    Leaves mostly (and in Flora area always) provided with domatia as small tufts of hairs without apparent excavation; bacterial nodules often present on the underside of the leaf-blade, situated either along the midrib and down the petiole or (not in East Africa) scattered; stipules sheathing, overtopped by 2 awns, with silky hairs and colleters inside
    Inflorescences
    Inflorescences axillary and opposite, with 1 or sometimes more flowers
    Flowers
    Flowers (5–)7–8(9)-merous, subtended by 2–4 bracteolar cups, each with 2 unequal pairs of awns
    Calyx
    Calyx ellipsoid in bud, either open (not in East Africa), or closed, with the tip obtuse to apiculate, completely covering the young corolla, deeply splitting between some lobes when the flower opens
    Corolla
    Corolla white, salver-shaped, usually (in East Africa always) with silky indumentum outside; lobes spreading, contorted to the left
    Stamens
    Stamens inserted at the throat, with basifixed anthers and with the connective broadly flattened
    Disc
    Disc annular
    Pistil
    Ovary 2-locular, each chamber having 1 pendulous placenta attached to the septum; placenta with (1–)2 ovules; style 2-lobed, hairy or glabrous, exserted
    Fruits
    Fruit mostly orange, sometimes red, nearly spherical, at first crowned by the persistent calyx which often withers as the fruit ripens, bilocular; endocarp papery, shiny inside
    Seeds
    Seeds either 1 per chamber and hemispherical or 2 per chamber and shaped like a quarter of a sphere; seed-coat brown and striate; hilar scar apical-adaxial, forming a ± elliptic plane, with a diameter of at least half the seed height; endosperm horny, entire; embryo straight, attaining half the diameter of the seed; cotyledons subcircular, placed in the centre of the seed, equalling the laterally oriented radicle.
    [FZ]

    Rubiaceae, D.M.Bridson & B.Verdcourt. Flora Zambesiaca 5:3. 2003

    Habit
    Shrubs, small trees or sometimes suffrutescent plants.
    Leaves
    Leaves often deciduous and dimorphic (blades at start of new season’s growth smaller and broader than those on the mature stem, TAB. 92/A), petiolate; domatia mostly present in the nerve axils as small tufts of hairs without an apparent excavation*; bacterial nodules often present on the underside of the leaf blade, situated either along the midrib and down the petiole (or outside the Flora Zambesiaca area, scattered); stipules sheathing at least when young, each limb with silky hairs and colleters inside and topped by an awn.
    Inflorescences
    Inflorescences axillary (very rarely apparently terminal on short shoots), 1-flowered or sometimes more; bract and bracteoles similar, cupular, arranged in a series of 2–4, progressively larger towards the top, each cupule with a pair of short and a pair of longer awns (TAB. 92/B6).
    Flowers
    Flowers (5)7–8(9)-merous.
    Calyx
    Calyx limb ellipsoid in bud, closed (outside the Flora Zambesiaca area, open) and completely covering the young corolla, with the tip obtuse to apiculate, splitting into two or more lobes at anthesis.
    Corolla
    Corolla white, salver-shaped, usually (always in the Flora Zambesiaca area) with silky indumentum outside; lobes contorted to the left in bud, spreading when mature.
    Stamens
    Stamens inserted at the throat; anthers basifixed, erect, with the connective broadly flattened.
    Disc
    Disk annular.
    Pistil
    Ovary 2-locular, each locule with 1 pendulous placenta attached to the septum; placenta with (1)2 impressed or pendulous ovules; style slender, hairy or glabrous; pollen presenter 2-lobed, just included or shortly exserted.
    Fruits
    Fruit mostly orange, sometimes red, nearly spherical, at first crowned by the persistent calyx limb, but this often withers as the fruit ripens, bilocular; endocarp papery, shiny inside.
    Seeds
    Seeds either 1 per chamber and hemispherical or 2 per chamber and quarter- spherical; seed coat brown and striate; hilar scar pale, apical-adaxial, ± elliptic to circular, total area ± half the size of the seed; endosperm horny, entire; embryo straight, half the diameter of the seed in length; cotyledons subcircular, in the centre of the seed, equalling the laterally oriented radicle.

    Images

    Distribution

    Native to:

    Angola, Benin, Burkina, Burundi, Cameroon, Central African Repu, Chad, Congo, Equatorial Guinea, Gabon, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Malawi, Mali, Mozambique, Nigeria, Northern Provinces, Rwanda, Senegal, Sierra Leone, Tanzania, Togo, Zambia, Zaïre, Zimbabwe

    Sericanthe Robbr. appears in other Kew resources:

    First published in Bull. Jard. Bot. Natl. Belg. 48: 27 (1978)

    Accepted by

    • Sonké, B., Taedoumg, H. & Robbrecht, E. (2012). A reconsideration of the Lower Guinean species of Sericanthe (Rubiaceae, Coffeeae), with four new species from Cameroon and Gabon Botanical Journal of the Linnean Society 169: 530-554.
    • Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Flora Zambesiaca
    • in Bull. Jard. Bot. Belg. 48: 27 (1978)
    • in Distr. Pl. Afr. 13: maps 406–429 (1978).
    Flora of Tropical East Africa
    • Distr. Pl. Afr. 13, maps 406–429 (1978)
    • in B.J.B.B. 48: 27 (1978)

    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 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