Recent taxonomic studies carried out in Euphorbiaceae from the Caatinga, including field collections and surveys of 14 herbaria, have revealed 29 taxa to be added to the previously published checklist of the family in the Northeast. The taxa are presented with information on synonymy, type material and voucher specimens. Comments related to geographical distribution, habitats and diagnostic characters are also given. The study increases the diversity of species of this important family in the semi-arid region of Brazil and points out the importance of intensive sampling in new areas, as well as the analysis of botanical collections already available.
Biodiversity; dry forest; floristic; Rain Forest
