1. Family: Apocynaceae Juss.
    1. Genus: Raphionacme Harv.
      1. Raphionacme madiensis S.Moore

        This species is accepted, and its native range is Uganda 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
    Herb, up to 0.2 m tall, profusely lactiferous.
    Tubers
    Tuber sub-spherical, up to 16 cm diameter.
    Stem
    Aerial stems erect to spreading, branching lateral, 10–16 cm long, puberulent to scabridulous
    Leaves
    Leaf petiole 5–20 mm long, puberulent; blade ovate, narrowly ovate, elliptic, narrowly elliptic, obovate or narrowly obovate, (5–)8–15 × (1–)3–5 cm, acute, base tapering, crinkled, above green, puberulent, veins pale and densely puberulous, beneath pale green, puberulent, veins prominent and densely puberulous, margin wavy
    Inflorescences
    Inflorescences terminal and axillary, compact, manyflowered, densely puberulous to scabridulous.
    Peduncles
    Peduncles 0.5–1 cm long.
    Bracts
    Bracts subulate, 3–5 mm long.
    Pedicel
    Pedicels 5–7 mm long
    Calyx
    Sepals very narrowly triangular or narrrowly ovate, 2–3 mm long
    Corolla
    Corolla tube campanulate, ± 2 mm long, puberulous outside; lobes oblong-ovate, oblong-triangular, narrowly ovate or narrowly triangular, 5–7 × ± 2 mm, outside puberulent, green, inside glabrous, green or dull green to whitish with brown, pink, magenta or violet streaks, and/or tips and/or margins
    Corona
    Coronal feet columnar, ± 1 mm long, fused laterally to inner base of corolla lobes, apically tri-segmented; central segment filiform, 5–7 mm long, apex bifid or not, tortuous, papillose, lateral segments filiform, 2–3 mm long, glabrous or papillose
    Filaments
    Staminal filaments filiform, curving inwards, ± 1 mm long.
    Anthers
    Anthers white, ovate, ± 2 mm long, apices fused together over style-head.
    Style
    Style terete, ± 1 mm long; stylehead ovoid, acute
    Gynostegium
    Gynostegium base in corolla mouth
    Fruits
    Follicles solitary, erect, ovoid, 4.5–6 cm long, 1.2–1.5 cm diameter, with tapering apex
    Seeds
    Seeds unknown.
    Ecology
    Wooded grassland and grassland on rocky outcrops and in shallow rock-basins; 850–2050 m
    Distribution
    Range: Congo-Kinshasa, Rwanda, Burundi, Angola, Zambia Flora districts: U1 U3 K3 T1 T4 T7
    [FTEA]
    Use
    The tuber is said to be edible.

    Distribution

    Native to:

    Angola, Burundi, Kenya, Rwanda, Tanzania, Uganda, Zambia, Zaïre

    Raphionacme madiensis S.Moore appears in other Kew resources:

    First published in J. Bot. 46: 293 (1908)

    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
    • U.K.W.F. ed. 2: 175 (1994).
    • Fl. Rwanda 3: 110 (1985)
    • J.B. 46: 294 (1908)

    Sources

    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 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