Abstract
Brazil is considered one of the richest countries in Piper species in South America, with the genus being considered one of the most representative of the Brazilian Atlantic Forest. The aim of this study is to improve the knowledge about Piper in the northeastern region of Brazil, and to this end, we recorded the taxa that occur in the eastern portion of this region. Collection expeditions were conducted in the study area between August 2017 and July 2019, 21 herbaria were visited, and other internationally important collections were consulted online. Thirty tree taxa were registered, from which one was recorded for the northeastern region for the first time (P. nematanthera), besides 11 new records for at least one of the states. We present a synopsis with comments about morphology, habitat and phenology.