Two new species of Borreria (Rubiaceae), synopsis and key to distinguish the species from Bahia, Brazil

(Two new species of Borreria (Rubiaceae), synopsis and key to distinguish the species from Bahia, Brazil). This work deals with a taxonomic study of the genus Borreria (Rubiaceae) for the state of Bahia, 29 species are recorded. Most of these species are distributed in the cerrado and Atlantic forest bionics. Two new species are described and illustrated, Borreria catolensis E.L. Cabral & L.M. Miguel and Borreria diamantinae R.M. Salas & E.L. Cabral. The new combination Borreria schumannii (Standl. ex Bacigalupo) E.L. Cabral & Sobrado is proposed. Neotype is designated for B. virgata. Epitype is designated for B. scabiosoides and lectotypes are designated for B. eryngioides and B. humifusa. A key for identification, comments on geographic distribution and habitats are provided, maps and a table with the species distribution for biomes are also included. Borreria crispata, B. cupularis, B. humifusa, B. virgata and B. wunschmannii are illustrated for the first time. The identities of B. ocymoides and B. prostrata are discussed; the first species is also illustrated. Borreria virgata and B. spinosa are reinstated. Two figures with representative photographs of 20 species are included.