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This species is accepted, and its native range is Central Tanzania to Zambia.
A specimen from Kew's Herbarium

[FTEA]

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

Morphology Reproductive morphology Seeds
Seeds ± 9 mm long; coma ± 3 cm long.
Ecology
Grassland or seasonally inundated grassland on limestone or other soils; 1200–1800 m
Morphology General Habit
A spreading herb, up to 0.5 m tall.
Vegetative Multiplication Tubers
Tuber ovoid to compressed-globose, 12–22 cm diameter.
Morphology Stem
Aerial stems spreading to decumbent, dichotomously branched, 15–20 cm long, hispid
Morphology 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
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, 3–4-flowered, hispid; peduncle 1–3 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Bracts subulate, 3–7 mm long.
Morphology Reproductive morphology Flowers Pedicel
Pedicels 5–6 mm long
Morphology Reproductive morphology Flowers Calyx
Sepals narrowly triangular, 4–6 × 1–2 mm, outside hispid
Morphology Reproductive morphology Flowers 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
Morphology Reproductive morphology Flowers 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
Morphology Reproductive morphology Flowers Androecium Stamens Filaments
Staminal filaments linear, ± 1 mm long.
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anthers oblong ovate to narrrowly ovate, ± 3 mm long, acuminate, upper half with pollen, lower a white callosity
Morphology Reproductive morphology Flowers Gynoecium Style
Styles terete, 7–8 mm long, apically fused; stylehead ovoid, acute, ± 2 mm long
Morphology Reproductive morphology Flowers Gynostegium
Gynostegium base in corolla mouth
Morphology Reproductive morphology 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

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
Leedal, G.P. [5264], Tanzania 40320.000
Robertson, S.A. [7094], Kenya 59443.000
Lloyd [45], Tanzania K000234181 Unknown type material

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

Accepted by

  • Albers, F. & Meve, U. (eds.) (2002). Illustrated handbook of succulent plants Asclepiadaceae, corr. 2nd printing: 1-318. Springer, Berlin, Heidelberg,New York.
  • Goyder, D.J., Gilbert, M.G. & Venter, H.J.T. (2020). Flora Zambesiaca 7(3): 1-375. Royal Botanic Gardens, Kew.
  • 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.

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).

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
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 2021. 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 2021. 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