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This species is accepted, and its native range is Eritrea to N. Tanzania, Yemen.
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 General Habit
Twining shrub to several metres; young stems sparsely to densely pubescent, rarely subglabrous
Morphology Leaves
Leaves not succulent; petiole 0.5–1.7(–2.5) cm long, pubescent; lamina ovate to oblong, 3–6 × 1.5–3.5 cm, apex acute, frequently shortly apiculate, base truncate or weakly cordate, with minute colleters, sub-glabrous with indumentum restricted to margins and principal veins, rarely more densely pubescent
Morphology Reproductive morphology Inflorescences
Inflorescences extra-axillary, pedunculate, with one or more clusters of flowers along the axis.
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles (to 1st cluster of flowers) 1–4.5 cm long, glabrous or pubescent, slender.
Morphology Reproductive morphology Inflorescences Bracts
Bracts minute, triangular.
Morphology Reproductive morphology Flowers Pedicel
Pedicels 4–8(–10) mm long, glabrous
Morphology Reproductive morphology Flowers Calyx
Calyx lobes ovate or triangular, 1–2 mm long, glabrous or with a pubescent apex, margins ciliate
Morphology Reproductive morphology Flowers Corolla
Corolla crimson, brown or purple, generally rotate, united at the base, upper surface of the lobes minutely but densely pubescent with white hairs at least towards the tips, glabrous beneath; corolla lobes triangular, oblong or ovate, 4–9 × 2–2.5 mm, often extended into a long, spatulate, twisted tip, margins revolute
Morphology Reproductive morphology Flowers Androecium Stamens
Staminal corona lobes fleshy, erect, 0.6–1.2 mm high, shorter than the gynostegium and fused to it for much of their length, oblong, brown or purple
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings 0.5 mm long.
Morphology Reproductive morphology Flowers Pollinarium
Pollinaria minute, corpusculum subcylindrical, 0.2–0.35 mm long; translator arms slender, terete, ± 0.15 mm long.
Morphology Reproductive morphology Flowers Pollinia
Pollinia ovoid, 0.2–0.3 mm long, attached to the translator arms apically
Morphology Reproductive morphology Flowers Gynoecium Style
Stylar head flat, green
Morphology Reproductive morphology Fruits
Follicles occuring singly, narrowly lanceolate in outline, ± 8 × 1 cm, with a long attenuate beak, smooth
Figures
Fig 121, p 506
Ecology
Montane and riverine forest; 2200–3000 m
Distribution
Range: Congo-Kinshasa (Kivu), Ethiopia, Eritrea and Yemen Flora districts: U2 K3 K4 K5 K6 T2

Native to:

Eritrea, Ethiopia, Kenya, Rwanda, Tanzania, Uganda, Yemen, Zaïre

Vincetoxicum heterophyllum (A.Rich.) Vatke appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Drummond, R.B. [1302], Tanzania Tylophora heterophylla 2017.000
Scott Elliot, G.F. [7973], Uganda Tylophora heterophylla K000305323
Schimper, W. [394], Ethiopia Tylophora heterophylla K000305330 Unknown type material
Schimper, W. [833], Ethiopia Tylophora heterophylla K000305331 Unknown type material
s.coll. [s.n.], Yemen Tylophora heterophylla K000228204 Unknown type material

First published in Linnaea 40: 212 (1876)

Not accepted by

  • Goyder, S., Harris, T., Masinde, S., Meve, U. & Venter, J. (2012). Flora of Tropical East Africa, Apocynaceae(2): 1-530. [Cited as Tylophora heterophylla.]

Literature

Kew Backbone Distributions

  • Goyder, S., Harris, T., Masinde, S., Meve, U. & Venter, J. (2012). Flora of Tropical East Africa, Apocynaceae(2): 1-530.
  • Troupin, G. (ed.) (1985). Flora du Rwanda 3: 1-729. Musee Royal de l'Afrique Centrale.

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