@article {77, title = {A new species of Chassalia (Rubiaceae, Rubioideae) from southern Cameroon: C. bipindensis}, journal = { Kew Bull.}, volume = {61}, year = {2006}, pages = {589}, chapter = {585}, abstract = {

Chassalia bipindensis Sonk\é, Nguembou \& A. P. Davis (Rubiaceae), a new species from southern\ Cameroon, is described and illustrated. The conservation status and taxonomic affinities of the new species are
discussed.

}, keywords = {Cameroon, Chassalia, conservation, IUCN Red List Categories, rainforest, Rubiaceae, Rubioideae}, author = {Sonk{\'e}, Bonaventure and Nguembou, Charlemagne and Cheek, Martin and Davis, Aaron} } @article {70, title = {Psychotria elephantina sp. nov. (Rubiaceae) an endangered rainforest shrub from Cameroon}, journal = { Nordic Journal of Botany}, volume = {31}, year = {2013}, pages = {573}, chapter = {569}, abstract = {

Psychotria elephantina Lachenaud \& Cheek is described as a new species. It is placed in P. sect. Involucratae (Petit) Verdc.,
endemic to the South West Region of Cameroon and is assessed as \‘ Endangered \’ (EN) using the IUCN criteria. Th e species
is distinctive in P. sect. Involucratae due to its long petioles (6.5 \– 12.0 cm), involucres of two pairs of large free bracts and
green corollas with included stamens in both longistylous and brevistylous fl owers.

}, author = {Cheek, Martin and Lachenaud, Olivier} } @article {44, title = {A new species of Tricalysia A. Rich. ex DC. (Rubiaceae) from western Cameroon}, journal = {Kew Bulletin}, volume = {57}, number = {3}, year = {2002}, note = {Times Cited: 0}, pages = {681-686}, abstract = {

Tricalysia lejolyana is described as a new species from the Banyang Mbo Wildlife Sanctuary in western Cameroon and its conservation status assessed. Its diagnostic characteristics are elucidated in relation to other taxa of the genus, in particular, to the species of the \&$\#$39;T. atherura\&$\#$39; group of Tricalysia subg. Tricalysia, sect. Tricalysia, in which it falls.

}, isbn = {0075-5974 (ISSN print)}, author = {Sonk{\'e}, Bonaventure and Cheek, Martin and Nambou D, Mercy and Robbrecht, Elmar} } @article {8, title = {Two further new species of Psychotria (Rubiaceae) from western Cameroon}, journal = {Kew Bulletin}, volume = {60}, number = {2}, year = {2005}, note = {Times Cited: 0}, pages = {293-300}, chapter = {293}, abstract = {

Two new species of Psychotria (Rubiaceae) from western Cameroon are described and illustrated, their conservation status assessed and their taxonomic affinities discussed. Both species were discovered in Kupe and the Bakossi Mts. Psychotria geophylax Check \& Sonke has affinities with sect. Flaviflorae E. M. A. Petit, whereas P bakossiensis Cheek \& Sonke falls near sect. Involucratae E. M. A. Petit \& Verdc.

}, isbn = {0075-5974}, author = {Cheek, Martin and Sonk{\'e}, Bonaventure} }