This paper describes the results of a survey of the Rubiaceae subfamily Rubioideae in the Guaribas Biological Reserve, State of Paraíba, Brazil. Intensive collections were made from October/2000 to October/2001, revealing 17 species and nine genera of Rubioideae. The most diverse genera were Psychotria L. (six species) and Borreria G. Mey. (four species). Coccocypselum P. Browne, Declieuxia Kunth, Diodia L., Mitracarpus Zucc. ex Roem. & Schult., Palicourea Aubl., Richardia L. and Staelia Cham. & Schltdl. were each represented by a single species. Perama hirsuta Aubl., of uncertain position within the family, is also treated in this paper. A key, descriptions, notes, and illustrations of the taxa are provided.
Rubiaceae; Rubioideae; Atlantic Forest; taxonomy
