Résumé
During the preparation of he treatment of the family Rubiaceae for the Flora of the Guiana,, two new species of Coussarea were discovered. One species, Coussorea longilaciniata, was collected in Guyana and is characterized by its long-lanceolate calyx lobes; the other, C. spicata, is from French Guiana and is unique in the genus by its spicate inflorescences. In addition, Faramea sessiliflora var. pedunculata is here elevated to the species level, and a new description of F sessiliflora is also provided in view of the re-delimitation of this species.