1. Family: Apocynaceae Juss.
    1. Oncinotis Benth.

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

    [FTEA]

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

    Habit
    Climbing shrubs or lianas; white latex present; branchlets (sub-)opposite, terete
    Leaves
    Leaves (sub-)opposite; petiole with glands on the adaxial side; domatia in some vein axils, consisting of pits, often with a ciliate margin or of a tuft of hairs
    Inflorescences
    Inflorescences terminal or axillary, thyrsoid, many-flowered; bracts deciduous
    Flowers
    Flowers 5-merous, fragrant
    Calyx
    Sepals imbricate, ciliate
    Corolla
    Corolla tube shortly pubescent outside, inside with tufts of stiff hairs, alternating with the stamens, at the mouth with 5 alternipetalous corona scales; lobes overlapping to the right, entire, recurved
    Stamens
    Stamens included, connivent into a cone; filaments short; anthers partly fertile, below the fertile part inside a nearly oblong patch, the retinacle, with minute hairs along the margin adhering to the pistil head
    Ovary
    Ovary semi-inferior; carpels two, connate at the extreme base, densely pubescent; disk present, adnate to the ovary at the extreme base, composed of a ring and five lobes; pistil head of a slightly 5-winged upper and a cylindrical lower portion to which the 5 retinacles adhere and a bifid stigmoid
    Fruits
    Fruits pendulous, of two follicles connate at the extreme base, dehiscent along an adaxialline; exocarp woody; endocarp stiff, thinly pergamentaceous
    Seeds
    Seeds attached to the adaxial side of the fruit, with an apical coma directed towards the apex of the fruit.
    [FZ]

    Apocynaceae, A. J. M. Leeuwenberg & F. K. Kupicha et al. Flora Zambesiaca 7:2. 1985

    Habit
    Scandent shrubs and tall lianes with milky latex.
    Spines
    Spines, tendrils and stipules absent.
    Petiole
    Glands present at or near apex of petiole.
    Leaves
    Domatia usually present on lower leaf surface.
    Flowers
    Flowers in terminal or axillary paniculate cymes, often greenish and inconspicuous.
    Calyx
    Calyx lobes imbricate, free almost to base.
    Corolla
    Corolla hypocrateriform; tube short, widest at the middle, hairy inside and outside, bearing 5 alternipetalous corona scales at the mouth; corolla lobes 5, contorted, overlapping to the right, spreading to reflexed, ± equalling tube.
    Stamens
    Stamens inserted almost at base of corolla tube; anthers large, conniving in a cone round the gynoecium, fertile in the upper part only, joined to the clavuncle by a retinacle (a linear appendage produced from the connective at the base of the anther).
    Receptacle
    Receptacular disc cupular, with 5 oppositi-petalous lobes.
    Pistil
    Ovary of 2 multiovulate carpels connate at the extreme base only; style very short; clavuncula consisting of a slightly 5-winged upper and a cylindri­cal lower portion, to the latter of which the 5 retinacles adhere; stigma bilobed.
    Fruits
    Fruit of 2 follicular mericarps.
    Seeds
    Seeds oblong with an apical coma; endosperm in a thin layer completely surrounding the embryo.

    Images

    Distribution

    Native to:

    Angola, Benin, Burundi, Cabinda, Cameroon, Cape Provinces, Central African Repu, Congo, Equatorial Guinea, Ethiopia, Gabon, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Kenya, KwaZulu-Natal, Liberia, Madagascar, Malawi, Mozambique, Nigeria, Senegal, Sierra Leone, Sudan, Tanzania, Togo, Uganda, Zambia, Zaïre, Zimbabwe

    Oncinotis Benth. appears in other Kew resources:

    First published in W.J.Hooker, Niger Fl.: 451 (1849)

    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
    • —F.T.A. 4, 1: 220.
    Flora Zambesiaca
    • in Bull. Jard. Bot. Brux. 24: 9–36 (1954).
    • Pichon in Mém. Mus. Nation. Hist. Nat. Paris, Sér. B, 1: 1–143 (1950)
    • in Hook., Niger Fl.: 451 (1849).
    Flora of Tropical East Africa
    • de Kruif in Agric. Univ. Wageningen Papers 85 (2): 8–45 (1985)
    • Pichon in B.J.B.B. 24: 9–36 (1954)
    • G. P. 2: 718 (1876)
    • in Niger Fl.: 451–452 (1849)

    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