Skip to main content
This species is accepted, and its native range is Bioko, Cameroon, Uganda to KwaZulu-Natal, Mayotte.
A specimen from Kew's Herbarium


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

Morphology General Habit
Twining herbaceous vine to several metres.
Morphology Stem
Stems to 3 mm diameter, glabrous or pubescent
Morphology Leaves
Leaves semi-succulent, leathery and frequently with prominent venation when dry; petiole 0.2–2 cm long, glabrous or pubescent; lamina ovate to oblong or suborbicular, (3–)4–13(–17) × (1.2–)2–7.5 cm, apex rounded to acute, frequently apiculate or mucronate, base weakly to strongly cordate, occasionally rounded or truncate, generally with a pair of colleters, completely glabrous or with indumentum of minute hairs on principal veins
Morphology Reproductive morphology Inflorescences
Inflorescences extra-axillary, sessile or pedunculate, or with both at the same node, axis of pedunculate inflorescences frequently continuing beyond the first cluster of flowers, forming further clusters at intervals, axes generally simple or occasionally branched.
Morphology Reproductive morphology Inflorescences Peduncles
Peduncles (to 1st cluster of flowers) to 7 cm long, glabrous or minutely pubescent.
Morphology Reproductive morphology Inflorescences Bracts
Bracts minute, triangular, ciliate.
Morphology Reproductive morphology Flowers Pedicel
Pedicels 3–11(–20) mm long, glabrous or pubescent
Morphology Reproductive morphology Flowers Calyx
Calyx lobes narrowly to broadly triangular, (0.5–)1–1.5 mm long, pubescent or more rarely glabrous
Morphology Reproductive morphology Flowers Corolla
Corolla green or cream, sometimes tinged with purple, generally rotate, united at the base, but in occasional plants united to ± half-way, resulting in campanulate or even urceolate corollas, densely velvety-pubescent with white hairs on upper surface, glabrous beneath; corolla lobes triangular to ovate, 2–3 × 1–2 mm, apex rounded, margins strongly revolute (most Tanzanian collections) or ± plane (most Kenyan material). Staminal corona lobes fleshy, erect, 0.8–1.2 mm high, almost as tall as the gynostegium and free from it for much of their length, oblong or ovate in outline with a truncate apex, slightly flattened dorsoventrally
Morphology Reproductive morphology Flowers Androecium Stamens Anthers
Anther wings 0.2 mm long
Morphology Reproductive morphology Flowers Pollinarium
Pollinaria minute, corpusculum 0.15–0.2 mm long, subcylindrical; translator arms slender, terete, somewhat curved, 0.1–0.17 mm long.
Morphology Reproductive morphology Flowers Pollinia
Pollinia ovoid, ± 0.2 mm long, attached to the translator arms apically
Morphology Reproductive morphology Flowers Gynoecium Style
Stylar head flat
Morphology Reproductive morphology Fruits
Follicles mostly occuring singly, narrowly lanceolate in outline, to ± 12 × 1 cm, smooth or slightly winged
Morphology Reproductive morphology Seeds
Seeds oblong to ovate, 6–10 × 3.5–5 mm, winged, glabrous or pubescent; coma 2.5–3.5 cm long.
Moist riverine forest or thicket; (0–)1400–2200 m
The inflorescence of Tylophora anomala is hugely variable in its architecture, varying from sessile subumbelliform clusters of flowers, through typical Tylophora pedunculate zig-zag inflorescences with clusters of flowers on the angles of a single shoot, to many-branched inflorescences in a single leaf axil. Local forms are distinctive (sp. B of U.K.W.F., for example with its sessile subumbelliform inflorescences), but are not given formal taxonomic recognition here as they do not correlate with other characters, and intermediates occur between the main inflorescence types. T. urceolata Meve, described from Mt Cameroon, is regarded here as an occasional variant with an inflorescence reduced to a single flower. Urceolate corollas occur sporadically throughout the range of the species and are not associated elsewhere with such reduced inflorescences. Meve (K.B. 1999) suggested that Pentarrhinum coriaceum Schltr. might be conspecific with T. anomala, although Schlechter’s diagnosis makes no mention of the conspicuous indumentum on the adaxial face of the corolla, which throws some doubt on this view. Were P. coriaceum proved to be conspecific, its publication predates not only T. anomala, but also T. coriacea Marais (a nomen novum for T. laevigata Decne.).
Flora districts: U2 U3 K1 K3 K4 K5 K6 K7 T2 T4 T6 T7 T8 Range: Widely distributed across eastern Africa to S Mozambique and NE South Africa, also in Cameroon and Bioko

Native to:

Cameroon, Comoros, Gulf of Guinea Is., Kenya, KwaZulu-Natal, Malawi, Mozambique, Tanzania, Uganda, Zambia, Zimbabwe

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

Date Reference Identified As Barcode Type Status
Jun 9, 2006 Tweedie [4109], Kenya Tylophora anomala 37040.000
May 1, 2006 Etuge, M. [3502], Cameroon Tylophora anomala K000338711
May 1, 2006 Gosline, G. [207], Cameroon Tylophora anomala K000338712
May 1, 2006 Etuge, M. [3337], Cameroon Tylophora anomala K000338710
Jan 1, 1997 Swynnerton, C.F.M. [137], Zimbabwe Tylophora anomala K000305321 Unknown type material
Goyder, D.J. [5035], Mozambique Tylophora anomala 71669.000
Gerrard, W.T. [1320], South Africa Tylophora anomala K000305318 Unknown type material
Gerrard, W.T. [1320], South Africa Tylophora anomala K000305317 Unknown type material
Meve, U. [901], Cameroon Tylophora anomala K000011906 Unknown type material
Meve, U. [901], Cameroon Tylophora anomala K000011956 Unknown type material

First published in Phytotaxa 369: 132 (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. 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.


Kew Backbone Distributions

  • Barthelat, F. (2019). La flore illustrée de Mayotte: 1-687. Biotope éditions.
  • Germishuizen, G. & Meyer, N.L. (eds.) (2003). Plants of Southern Africa: an annotated checklist. Strelitzia 14.: i-vi, 1-1231. National Botanical Institute, Pretoria.
  • 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.

Flora of Tropical East Africa
Flora of Tropical East Africa

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 World Checklist of Selected Plant Families.

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.