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This species is accepted, and its native range is Cameroon to Kenya and N. Malawi.
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
Slender twining herbaceous vine to 3 metres, stems subglabrous to uniformly but minutely pubescent
Morphology Leaves
Leaves not succulent; petiole 0.6–2 cm long, pubescent with hairs mostly in groove along adaxial surface, occasionally subglabrous; lamina ovate to oblong or narrowly triangular, 2–6 × 1–2 cm, apex acute or attenuate, base rounded to truncate and with minute colleters, sub-glabrous
Morphology Reproductive morphology Inflorescences
Inflorescences extraaxillary, pedunculate, with one or more clusters of flowers along the axis.
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles (to 1st cluster of flowers) 1.5–3.5 cm long, slender, glabrous.
Morphology Reproductive morphology Inflorescences Bracts
Bracts minute, pubescent.
Morphology Reproductive morphology Flowers Pedicel
Pedicels 0.6–2 cm long, glabrous
Morphology Reproductive morphology Flowers Calyx
Calyx lobes triangular, 0.5–1 mm long, glabrous.
Morphology Reproductive morphology Flowers Corolla
Corolla pale to deep pink, rotate, united at the base only, sparsely pubescent or subglabrous adaxially, glabrous beneath; lobes ovate to triangular, 1.5–3.5 × 0.5–1.5 mm, apex acute to subacute
Morphology Reproductive morphology Flowers Gynostegium
Gynostegium 0.6–0.8 mm long
Morphology Reproductive morphology Flowers Androecium Stamens
Staminal corona lobes fleshy, ovoid, 0.4–0.6 mm high, reaching the base of the anthers and adnate to the staminal column for their entire length
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings 0.2 mm long.
Morphology Reproductive morphology Flowers Pollinarium
Pollinaria minute, corpusculum ± 0.07 mm long; translator arms slender, terete, ± 0.05 mm long.
Morphology Reproductive morphology Flowers Pollinia
Pollinia ovoid, ± 0.15 mm long, attached to the translator arms laterally
Morphology Reproductive morphology Flowers Gynoecium Style
Stylar head flat
Morphology Reproductive morphology Fruits
Follicles narrowly lanceolate in outline, 4–6 × ± 0.5 cm, with a long slender beak, smooth.
Morphology Reproductive morphology Seeds
Seed not seen.
Ecology
Upland forest in the west, dry coastal forest in the east; 50–1500 m
Note
Corolla lobes acute/attenuate, mostly with a sparse indumentum on upper surface, at least towards tip. Material from Kenyan and Tanzanian coastal forests generally has shorter corolla lobes and a less rectangular outline to the anther wings as compared with western, upland material. Collections from the Rondo Plateau in southern Tanzania, however, are ± intermediate between these forms, and I have not recognised the entities formally.
Distribution
Flora districts: U4 K5 K7 T3 T4 T6 T8 Range: Cameroon and Congo (Brazzaville)

Native to:

Cameroon, Congo, Gabon, Kenya, Malawi, Tanzania, Uganda, Zaïre

Vincetoxicum tenuipedunculatum (K.Schum.) Meve & Liede appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jun 9, 2006 Polhill, R. [863], Kenya Tylophora tenuipedunculata 3730.000
Robertson, S.A. [7016], Kenya Tylophora tenuipedunculata 59445.000
Goyder, D.J. [3726], Tanzania Tylophora tenuipedunculata 59816.000
Soyaux, H. [163], Congo, DRC Tylophora tenuipedunculata K000305334

First published in Phytotaxa 369: 165 (2018)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.
  • Goyder, D.J., Gilbert, M.G. & Venter, H.J.T. (2020). Flora Zambesiaca 7(3): 1-375. Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • 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.
  • Onana, J.M. (2011). The vascular plants of Cameroon a taxonomic checklist with IUCN assessments: 1-195. National herbarium of Cameroon, Yaoundé.
  • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.

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