摘要：Peperomia Ruiz & Pav. is the second largest genus of Piperaceae with about 1,600 to 1,700 species in the world, with greater diversity in the Neotropics and with great representation in Brazil. The objective of the work was to identify as Peperomia Ruiz & Pav. species present in the Reserva Biológica do Tinguá, carrying out taxonomic treatment and comments. The REBIO of Tinguá is a Federal Conservation Unit of Integral Protection, located in the State of Rio de Janeiro and inserted in the Atlantic Forest biome. There have been found 14 taxa in REBIO of Tinguá: Peperomia alata Ruiz & Pav.; P. catharinae Miq.; P. corcovadensis Gardner; P. dichotoma Regel; P. glabella (Sw.) A. Dietr. var. glabella; P. glabella var. nervulosa (C. DC.) Yunck.; P. glabella var. nigropunctata (Miq.) Dahlst.; P. glazioui C. DC.; P. nitida Dahlst.; P. obtusifolia (L.) A. Dietr.; P. quadrifolia (L.) Kunth; P. rotundifolia (L.) Kunth; P. tetraphylla (G. Forst.) Hook. & Arn.; P. urocarpa Fisch. & C. A. Mey.
