1. Family: Apocynaceae Juss.
    1. Genus: Raphionacme Harv.
      1. Raphionacme welwitschii Schltr. & Rendle

        This species is accepted, and its native range is Tanzania to S. Tropical Africa.

    [FTEA]

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

    Habit
    Suffrutescent herbaceous climber.
    Tubers
    Tuber hemi-spherical, up 20 cm diameter.
    Stem
    Aerial stems annual, branching lateral, twining, up to 1 m long, velutinous
    Leaves
    Leaf petiole (0.7–)1.5–2.5(–4) cm long, velutinous; blade herbaceous to coriaceous, narrowly ovate, ovate, elliptic, narrowly obovate or obovate, (4–)5–11(–21) × (1.5–)3–7(–9) cm, acute to obtuse-mucronate, base cuneate to obtuse, dark green above, pale green beneath, velutinous to tomentose, lateral veins semi-divaricate
    Inflorescences
    Inflorescences axillary, compact, 10–15-flowered fascicle of monochasia, velutinous.
    Peduncles
    Peduncles 3–15 mm long.
    Bracts
    Bracts broadly ovate, 1–2 mm long.
    Pedicel
    Pedicels 2–6 mm long
    Calyx
    Sepals broadly triangular, broadly ovate or ovate, 2–3 × 1–2 mm, acute to obtuse, outside velutinous, green tinged red
    Corolla
    Corolla tube campanulate, 2–4 mm long, greenish, glabrous; lobes reflexed, greenish-yellow to green with brown, reddish-brown or purplish-brown markings near base of lobe, ovate, 5–6(–12) × 3–4 mm, acute to obtuse, outside tomentose
    Corona
    Corona pale yellow, pale green or green, glabrous, lobes trisegmented to tripartite; central segment filiform to acicular, 2–5 mm long, apex simple or bifid; lateral segments acicular to claw-shaped
    Filaments
    Staminal filaments filiform, 1–2 mm long, base dilated.
    Anthers
    Anthers greenish to white, narrowly ovate, 2 mm long, acute to acuminate
    Style
    Style 2–3 mm long, terete; style-head ovoid, ± 2 mm long, acute
    Gynostegium
    Gynostegium elevated above corolla mouth.
    Fruits
    Follicles solitary or rarely paired, narrowly ovoid, tapering, 4–6 cm long, 1–1.3 cm wide.
    Seeds
    Seeds brown, obliquely ovate, 7 mm long; coma coppery coloured, 2.5 cm long
    Figures
    Fig 48, p 156
    Ecology
    Miombo woodland and grassland; 400–1600 m
    Distribution
    Flora districts: T4 T6 T7 T8 Range: Angola, Malawi, Mozambique, Congo-Kinshasa, Zambia, Zimbabwe

    Images

    Distribution

    Native to:

    Angola, Malawi, Mozambique, Tanzania, Zambia, Zaïre, Zimbabwe

    Raphionacme welwitschii Schltr. & Rendle appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2008 Bingham, M. G. [12624], Zambia K000438748
    Jan 1, 2008 Bingham, M. G. [12632], Zambia K000438749
    Jan 1, 2007 Luke [11598], Tanzania K000469047
    Brown, N.E. [s.n.] K000234163 Unknown type material
    Leedal, G.P. [5267], Tanzania 40317.000
    Schaijes, M. [2637], Congo, DRC 50428.000
    Schaijes, M. [2656], Congo, DRC 50440.000
    Goyder, D.J. [3864], Tanzania 59809.000
    Goyder, D.J. [4006], Kenya 59828.000
    Welwitsch [4234], Angola K000234162 Unknown type material
    Milne-Redhead, E. [2546], Zambia Raphionacme denticulata 31213.000

    First published in J. Bot. 34: 97 (1896)

    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.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    • 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.
    • Figueiredo, E. & Smith, G.F. (2008). Plants of Angola Strelitzia 22: 1-279. National Botanical Institute, Pretoria.
    Flora of Tropical East Africa
    • Illustr. Handb. Succ. Pl.: Asclepiadaceae: 228 (2002).
    • Cribb & Leedal, Mt Fl. S. Tanz.: 103, t. 23c (1982)
    • J.B. 34: 97 (1896)

    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