1. Family: Apocynaceae Juss.
    1. Genus: Raphionacme Harv.
      1. Raphionacme longituba E.A.Bruce

        This species is accepted, and its native range is Central Tanzania to Zambia.

    [FTEA]

    Apocynaceae (part 2), David Goyder, Timothy Harris, Siro Masinde, Ulrich Meve, Johan Venter. Flora of Tropical East Africa, 2012

    Seeds
    Seeds ± 9 mm long; coma ± 3 cm long.
    Ecology
    Grassland or seasonally inundated grassland on limestone or other soils; 1200–1800 m
    Habit
    A spreading herb, up to 0.5 m tall.
    Tubers
    Tuber ovoid to compressed-globose, 12–22 cm diameter.
    Stem
    Aerial stems spreading to decumbent, dichotomously branched, 15–20 cm long, hispid
    Leaves
    Leaf petiole ± 3 mm long, hispid, with reddish colleters above; blade often succulent, elliptic to ovate, 5–7 × 2–4 cm, obtuse-mucronate, base obtuse, sparsely hispid, dotted, secondary veins divaricate to patent, margin thickened, undulating, densely hispid
    Inflorescences
    Inflorescences axillary, 3–4-flowered, hispid; peduncle 1–3 cm long.
    Bracts
    Bracts subulate, 3–7 mm long.
    Pedicel
    Pedicels 5–6 mm long
    Calyx
    Sepals narrowly triangular, 4–6 × 1–2 mm, outside hispid
    Corolla
    Corolla green tinged maroon or purplish to brown outside, white, white tinged pink to purplish inside; tube cylindricalcampanulate, 7–10 mm long, outside sparsely hispid; lobes spreading, oblong to narrowly ovate, 9–12 × 3–5 mm, obtuse to acute
    Corona
    Corona conniving dome-like over gynostegium; lobes fleshy, white, greenish-white to creamy-white, narrowly ovate to ovate, acuminate or bifid, concave, 5–8 × 2–3 mm
    Filaments
    Staminal filaments linear, ± 1 mm long.
    Anthers
    Anthers oblong ovate to narrrowly ovate, ± 3 mm long, acuminate, upper half with pollen, lower a white callosity
    Style
    Styles terete, 7–8 mm long, apically fused; stylehead ovoid, acute, ± 2 mm long
    Gynostegium
    Gynostegium base in corolla mouth
    Fruits
    Follicles solitary, erect, very narrowly ovoid, 17–18 cm long, 1–1.5 cm diameter, tapering
    Distribution
    Range: Zambia and Malawi Flora districts: T4 T5 T7

    Images

    Distribution

    Native to:

    Malawi, Tanzania, Zambia

    Raphionacme longituba E.A.Bruce appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Sep 28, 2009 Specks, E. [1038], Tanzania K000234183 holotype
    Robertson, S.A. [7094], Kenya 59443.000
    Leedal, G.P. [5264], Tanzania 40320.000
    Lloyd [45], Tanzania K000234181 Unknown type material

    First published in Bull. Misc. Inform. Kew 1937: 419 (1937)

    Accepted by

    • Goyder, S., Harris, T., Masinde, S., Meve, U. & Venter, J. (2012). Flora of Tropical East Africa, Apocynaceae(2): 1-530.
    • Venter, H.J.T. (2009). A taxonomic revision of Raphianacme (Apocynaceae: Periplocoideae) South African Journal of Botany 75: 292-350.
    • Albers, F. & Meve, U. (eds.) (2002). Illustrated handbook of succulent plants Asclepiadaceae, corr. 2nd printing: 1-318. Springer, Berlin, Heidelberg,New York.

    Literature

    Kew Backbone Distributions
    • Venter, H.J.T. (2009). A taxonomic revision of Raphianacme (Apocynaceae: Periplocoideae) South African Journal of Botany 75: 292-350.
    Flora of Tropical East Africa
    • K.B. 1937: 419 (1937).

    Sources

    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.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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