Abstract
Poikilacanthus harleyi is synonymyized in P. bahiensis and Dicliptera xipotensis is transferred to Justicia. The new combination J. xipotensis (Roem. & Schult.) A. Côrtes & Rapini is the correct name for J. leucophloea; a list of homotypic (nomenclatural) synonyms of this species is provided.
Key words:
Caatinga; Dicliptera; Justicia; nomenclature; Poikilacanthus; taxonomy