Two new rarely collected species of Annonaceae from the Peruvian Amazon.

While preparing a taxonomic revision of the Neotropical genus Chatrou (Annonaceae), two species new to science - S.Lara & Chatrou, , and Chatrou & Gees, - were discovered. Both species are known from only two collections, made in Amazonian Peru. We clarify their generic placement and taxonomic identity based on a comparison of morphological characters with previously described species and on molecular phylogenetic analysis of four plastid markers. The conservation status of both species is assessed following IUCN criteria, and line drawings and distribution map are provided.