1. Family: Rubiaceae Juss.
    1. Hyperacanthus E.Mey. ex Bridson

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

    [FZ]

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

    Calyx
    Calyx tube oblong-ovoid; limb well developed, tubular, divided into teeth near apex, pubescent, at least near apex inside, and with colleters present near apex inside.
    Corolla
    Corolla white or often streaked with pink or red outside, salver-shaped; tube narrowly cylindrical, slightly widened at apex, glabrous or pubescent outside, with a patch of hairs at about the mid-point inside; lobes 5(6), elliptic to broadly elliptic, overlapping to right in bud, spreading, puberulous on both faces.
    Anthers
    Anthers 5(6), linear, almost sessile, attached near middle, with one quarter to one third exserted.
    Pollen
    Pollen grains single.
    Pistil
    Ovary bilocular with placenta attached to septum but with 2 additional parietal attachments in basal half (see Bridson cit. sup. fig. 2 G–M); style narrowly cylindrical, glabrous, somewhat shorter than or ± equalling the corolla tube in length; pollen presenter exserted or sometimes included, bifid but lobes normally adherent; disk annular, tending to be 5-lobed.
    Fruits
    Fruit spherical to fusiform, not ribbed, 1-locular (but showing remains of 2 septa in upper part and 4 septa in lower part); pericarp not markedly thick; calyx limb persistent.
    Seeds
    Seeds numerous, embedded in fleshy placental tissue, ± sublenticular; testa thin, reticulate, then often wrinkled to give a rugulose appearance; endosperm entire, horny; embryo erect.
    Habit
    Shrubs or small trees, with both spines and brachyblasts present or absent (see Bridson cit. sup. fig. 2 A–E).
    Leaves
    Leaves opposite or frequently appearing fasciculate due to crowding, petiolate; domatia absent; stipules ovate but tightly in-rolled at apical node and readily caducous.
    Flowers
    Flowers 5(6)-merous, borne in one axil near apex of lateral branches or brachyblasts, either solitary and sessile to shortly pedunculate or with up to 3 on a common peduncle; pedicels almost obsolete; bracteoles paired, ovate.

    Images

    Distribution

    Native to:

    Cape Provinces, KwaZulu-Natal, Madagascar, Mozambique, Northern Provinces, Swaziland, Zimbabwe

    Hyperacanthus E.Mey. ex Bridson appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Davis, A.P. [1205], Madagascar 61797.000
    Davis, A.P. [2507], Madagascar 64129.000
    Davis, A.P. [2286], Madagascar 76223.000
    Rakotonasolo, F. [526], Madagascar 76221.000
    Rakotonasolo, F. [118], Madagascar 76224.000
    Rakotonasolo, F. [642], Madagascar 77736.000
    Rakotonasolo, F. [426], Madagascar 77744.000
    Rakotonasolo, F. [423], Madagascar 77739.000
    Rakotonasolo, F. [635], Madagascar 65210.000
    Rakotonasolo [114], Madagascar 73896.000
    Rakotonasolo [98], Madagascar 73311.000
    Rakotonasolo [118], Madagascar 73314.000
    De Block, P. [1325], Madagascar 76222.000

    First published in Kew Bull. 40: 275 (1985)

    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 Zambesiaca
    • in Kew Bull. 40: 273–286 (1985).

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    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