Rinorea spongiocarpa and Rinorea dimakoensis (Violaceae), new threatened species of forest trees from East and South Regions of Cameroon and Gabon

Summary Two tree species are described as new to science: Rinorea spongiocarpa Achound. sp. nov. (placed in [unranked] Brachypetalae) and R. dimakoensis Ilicifolieae). Both occur Cameroon, south of the Sanaga river, first from South East Regions, occurring evergreen forest Ngovayang Lolodorf across southern plateau Dja forest. The second extends also Gabon, Cameroon northern part Region semi-deciduous towards interface with woodland habitats Dimako-Bertoua area. two mapped illustrated, their affinities conservation status according 2012 IUCN categories criteria discussed. threatened extinction due habitat destruction, both assessed Vulnerable.