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This species is accepted, and its native range is Benin to Uganda.
A specimen from Kew's Herbarium

[FWTA]

Asclepiadaceae, A. A. Bullock. Flora of West Tropical Africa 2. 1963

Morphology General Habit
A climber very like the above (Tylophora cameroonica), but with less expanded panicles, the purple flowers larger and fewer, stems, inflorescences and veins golden-tomentose and the leaves very glaucous.

[FWTA]

Asclepiadaceae, A. A. Bullock. Flora of West Tropical Africa 2. 1963

Morphology General Habit
A glabrous climber
Morphology Leaves
Very broad leaves
Morphology Reproductive morphology Flowers
Small purple flowers in clusters along the branches of large diffuse paniculate cymes.

[FTEA]

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

Morphology General Habit
Robust vine to several metres.
Morphology Stem
Stems at least 5 mm in diameter, glabrous or minutely tomentose with golden hairs
Morphology Leaves
Leaves semi-succulent; petiole 1–3 cm long, glabrous or pubescent; lamina elliptic to suborbicular, 8–16 × (4–)5–13 cm, apex rounded and with a short apiculus, base cordate, completely glabrous or with indumentum of minute hairs on margins and on principal veins beneath
Morphology Reproductive morphology Inflorescences
Inflorescences extra-axillary, with 1–several much-branched and generally congested (in the Flora area) panicles at each node, inflorescence axes subglabrous to minutely tomentose.
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles (to 1st branching point) 2–4.5 cm long.
Morphology Reproductive morphology Inflorescences Bracts
Bracts triangular, minute.
Morphology Reproductive morphology Flowers Pedicel
Pedicels 3–5 mm long, minutely tomentose with golden hairs
Morphology Reproductive morphology Flowers Calyx
Calyx lobes broadly triangular, ± 1 mm long, minutely tomentose with golden hairs
Morphology Reproductive morphology Flowers Corolla
Corolla pink or reddish purple, rotate, united at the base, sparsely pubescent with white hairs on upper surface, glabrous beneath; corolla lobes ovate, ± 2–3 × 2 mm, apex rounded
Morphology Reproductive morphology Flowers Androecium Stamens
Staminal corona lobes maroon or purple, fleshy, ± 0.5 mm long, shorter than the gynostegium and radiating from it
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings 0.2 mm long
Morphology Reproductive morphology Flowers Pollinarium
Pollinaria minute, corpusculum ovoidsubcylindrical, ± 0.05 mm long; translator arms slender, terete, somewhat curved, ± 0.05 mm long.
Morphology Reproductive morphology Flowers Pollinia
Pollinia ovoid, ± 0.1 mm long
Morphology Reproductive morphology Flowers Gynoecium Style
Stylar head flat
Morphology Reproductive morphology Fruits
Follicles mostly occuring singly, to ± 8 × 1 cm, narrowly lanceolate in outline, smooth
Morphology Reproductive morphology Seeds
Seeds oblong to ovate, 6–7 × 3 mm, winged and with a minutely pubescent convex face and a glabrous concave face; coma 1.5 cm long.
Ecology
Moist forest; 1200–1300 m
Note
Most collections of this species are robust climbers with minutely golden-tomentose stems and inflorescences – characters used by Bullock (K.B. 9: 585 (1955)) in describing Tylophora glauca. Collections of T. cameroonica sensu Bullock have more diffuse, subglabrous inflorescences and glabrous stems. However, these characters are inconsistent even in the specimens Bullock cited from Uganda. While extreme forms are indeed distinctive, many specimens are more difficult to place. Variation in inflorescence architecture parallels that in T. anomala, so the more slender collections from Cameroon ( T. cameroonica sensu stricto) are regarded here as merely a distinctive form within a more broadly defined species.
Distribution
Flora districts: U2 U4 Range: Scattered localities from Ivory Coast to Cameroon and E Congo-Kinshasa

[FTEA]
Use
Cultivated as an ornamental in parts of Uganda

Native to:

Benin, Cameroon, Congo, Ivory Coast, Nigeria, Uganda, Zaïre

Vincetoxicum cameroonicum (N.E.Br.) Meve & Liede appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Troupin, G. [3719], Congo, DRC Tylophora glauca 1085.000
Onochie, C. [FHI 33430], Nigeria Tylophora glauca 22855.000
Onochie, C.F.A. [FHI 33430], Nigeria Tylophora glauca K000305341 holotype
Onochie, C.F.A. [FHI 33430], Nigeria Tylophora glauca K000305340 holotype
Dec 1, 2004 Gosline, G. [421], Cameroon Tylophora cameroonica K000199918
Jan 1, 1993 Tchouto (Mbatchou), P. [60], Cameroon Tylophora cameroonica K000086199
Jan 1, 1954 Dalziel, J.M. [8236], Cameroon Tylophora cameroonica K000028329
Jan 1, 1954 Dalziel, J.M. [8236], Cameroon Tylophora cameroonica K000028328
Johnston, H.H. [s.n.] Tylophora cameroonica K000305333 Unknown type material

First published in Phytotaxa 369: 136 (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.

Literature

Kew Backbone Distributions

  • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
  • 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.
  • Sita, P. & Moutsambote, J.-M. (2005). Catalogue des plantes vasculaires du Congo, ed. sept. 2005: 1-158. ORSTOM, Centre de Brazzaville.

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

Flora of West Tropical Africa
Flora of West Tropical 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