1. Family: Rubiaceae Juss.
    1. Rytigynia Blume

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

    [FTEA]

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

    Habit
    Shrubs or small trees, occasionally somewhat scrambling; stems spiny in a few species, usually distinctly lenticellate
    Leaves
    Leaves opposite or occasionally in whorls of 3, particularly in some forms of R. celastroides, petiolate, often with domatia in axils of nerves beneath; stipules connate at the base, oblong or triangular, villous within, often ± persistent, ending in a mostly linear or subulate ± deciduous appendage
    Flowers
    Flowers mostly 5-merous, small, usually white, yellowish or greenish, axillary, solitary or in 2–10(–15)-flowered sometimes umbel-like cymes; peduncles and pedicels mostly well developed; bracts and sometimes bracteoles present, small; sometimes inflorescence-axes scarcely developed and flowers appear fasciculate
    Buds
    Buds obtuse, acute or conspicuously long-apiculate, glabrous or pubescent outside
    Calyx
    Calyx-tube ± subglobose, the limb short, truncate or denticulate only, distinctly lobed in a few species mostly in distinctive subgenera, mostly persistent on the young fruit
    Corolla
    Corolla-tube cylindrical, glabrous or hairy within for part or most of length or with a ring of deflexed hairs in the middle; lobes shorter than to longer than the tube, acute to very distinctly long-apiculate or with a filiform appendage
    Stamens
    Stamens slightly to distinctly exserted; anthers often mucronate or slightly appendaged, often papillate; filaments very short
    Pistil
    Ovary mostly 3–5(–6)-locular, but 2-locular in some species; style usually exserted, slightly swollen at base; stigmatic club coroniform, subglobose or occasionally cylindrical, sulcate beneath where in contact with anther-thecae, mostly distinctly 2–5-lobed at apex
    Disc
    Disk depressed, glabrous
    Fruits
    Fruit mostly globose or asymmetrical and compressed if only 1–2 pyrenes developed, ± 1 cm. diameter, with 1–5 pyrenes; pyrenes narrowly ± reniform or boat-shaped, the notch about one-third from the apex, the dehiscence line on a ± marked keel, often pitted.
    [FZ]

    Rubiaceae, D. Bridson. Flora Zambesiaca 5:2. 1998

    Habit
    Shrubs or small trees, occasionally somewhat scrambling; stems spiny in a few species, usually distinctly lenticellate.
    Leaves
    Leaves opposite, or occasionally in whorls of 3 particularly in some forms of R. celastroides, petiolate, often with domatia in axils of nerves beneath; stipules often ± persistent, connate at the base, oblong or triangular, villous within, ending in a mostly linear or subulate ± deciduous appendage.
    Flowers
    Flowers axillary, solitary, or in 2–10(15)-flowered umbel-like cymes, mostly 5-merous, small, usually white, yellowish or greenish; peduncles and pedicels mostly well-developed; bracts and sometimes bracteoles present, small; sometimes inflorescence axes scarcely developed and flowers appearing fasciculate.
    Calyx
    Calyx tube ± subglobose; limb short, truncate or denticulate, distinctly lobed in a few species (mostly in distinctive subgenera), mostly persisting on the young fruit.
    Corolla
    Corolla obtuse, acute or conspicuously long-apiculate in bud; tube cylindrical, glabrous or pubescent outside, glabrous or hairy within for part or for most of the tube length, or corolla tube with a ring of deflexed hairs in the middle; lobes shorter than to longer than the tube, acute to very distinctly long apiculate, or with a filiform appendage.
    Stamens
    Stamens slightly to distinctly exserted; anthers often mucronate to slightly appendaged, often papillate; filaments very short.
    Ovary
    Ovary mostly 3–5(6)-locular, but 2-locular in some species.
    Style
    Style usually exserted, slightly swollen at the base.
    Pollen
    Pollen presenter coroniform, subglobose or occasionally cylindrical, sulcate beneath where in contact with anther cells, mostly distinctly 2–5-lobed at the apex.
    Disc
    Disk depressed, glabrous.
    Fruits
    Fruit mostly globose, or asymmetrical and compressed if only 1–2 pyrenes developed, c. 10 mm in diameter, with 1–5 pyrenes.
    Pyrene
    Pyrenes narrowly ± reniform or boat-shaped, the notch usually about one third from the apex, the dehiscence line on a ± marked keel, often pitted.

    Images

    Distribution

    Native to:

    Angola, Benin, Botswana, Burkina, Burundi, Cabinda, Cameroon, Caprivi Strip, Central African Repu, Chad, Congo, Equatorial Guinea, Ethiopia, Gabon, Ghana, Guinea, Guinea-Bissau, Gulf of Guinea Is., Ivory Coast, Kenya, KwaZulu-Natal, Liberia, Madagascar, Malawi, Mali, Mozambique, Nigeria, Rwanda, Senegal, Sierra Leone, Somalia, Sudan, Tanzania, Togo, Uganda, Zambia, Zaïre, Zimbabwe

    Rytigynia Blume appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Andrews, F.W. [1882], Sudan 929.000
    Maurin, O. [61], Cameroon 70374.000
    Mphamba [66], Mozambique K000614284

    First published in Mus. Bot. 1: 178 (1850)

    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.

    Literature

    Flora of West Tropical Africa
    • Robyns in Bull. Jard. Bot. Brux. 11: 132 (1928).
    • Mus. Bot. Lugd. Bat. 1:178 (1850)
    Flora Zambesiaca
    • Verdcourt in Kew Bull. 42: 145–186 (1987).
    • Robyns in Bull. Jard. Bot. État 11: 132 (1928).
    • Mus. Bot. 1: 178 (1850).
    Flora of Tropical East Africa
    • Verdc. in K.B. 42:145(1987)
    • Robyns in B.J.B.B. 11: 132 (1928)
    • Mus. Bot. Lugd. Bat. 1: 178 (1850)

    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 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