Un Leptactina (Rubiaceae, Pavetteae) nouveau de République Centrafricaine: Leptactina deblockiae

A new species of Leptactina (Rubiaceae) with axillary inflorescences, gibbous stipules and fruits ellipsoid from Cenral African Republic, L. deblockiae Neuba & Sonke, is described and illustrated here. Affinities of this new taxon with other species of Leptactina is discussed. A key of Leptactina species with axillary inflorescences is provided. © Publications Scientifiques du Museum national d'Histoire naturelle.