Vol. 80 No. 2 Suppl. (2025)
Articles

Keetia tinka & K. kounounkan sp. nov. (Rubiaceae - Vanguerieae) new threatened forest climbers and shrubs of sandstone plateaux of the Republic of Guinea

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  • Faya Julien Simbiano,
  • Charlotte Couch,
  • Sekou Magassouba,
  • Xander M. van der Burgt,
  • Jack Plummer,
  • Martin Cheek
Faya Julien Simbiano
Herbier National de Guinée, Université Gamal Abdel Nasser de Conakry, Guinea
Charlotte Couch
Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, UK
Sekou Magassouba
Herbier National de Guinée, Université Gamal Abdel Nasser de Conakry, Guinea
Xander M. van der Burgt
Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, UK
Jack Plummer
Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, UK
Martin Cheek
Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, UK
DOI: https://doi.org/10.36253/jopt-19152

Published 2025-11-17

Keywords

  • conservation,
  • Keetia,
  • lianas,
  • Rubiaceae,
  • taxonomy

How to Cite

Simbiano, F. J., Couch, C., Magassouba, S., van der Burgt, X. M., Plummer, J., & Cheek, M. (2025). Keetia tinka & K. kounounkan sp. nov. (Rubiaceae - Vanguerieae) new threatened forest climbers and shrubs of sandstone plateaux of the Republic of Guinea. Webbia, 80(2), 183–195. https://doi.org/10.36253/jopt-19152

Copyright (c) 2025 Faya Julien Simbiano, Charlotte Couch, Sekou Magassouba, Xander M. van der Burgt, Jack Plummer, Martin Cheek

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

Two new species of Keetia are described from recent botanical collections for conservation management made in surviving submontane forest areas of the sandstone plateau areas of the Republic of Guinea. Keetia kounounkan Cheek & Simbiano is a shrub of the Kounounkan Plateau towards the border of Sierra Leone, so far with a single location in gallery forest. K. tinka Cheek & Simbiano is an evergreen rainforest climber of the main part of the Fouta Djalon Highlands with two locations both in degraded forest. Both species are described, illustrated and provisionally assessed for their conservation status, the first as Critically Endangered, the second as Endangered.

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