Twelve new and exciting Annonaceae from the Neotropics.

As a result of concerted efforts of the community of Annonaceae taxonomists, increasingly detailed knowledge of the diversity of the Neotropical genera has been documented. With the exception of just two large genera, and , all Neotropical Annonaceae have been revised within the last 25 years. Subsequent to these publications, many new specimens have been collected and sent to us in Leiden for identification.

Revisions of and (Annonaceae) including a new species and an overview of most up-to-date revisions of Neotropical Annonaceae genera.

We present revisions of the Neotropical genera and (Annonaceae). includes a single species . now comprises two species, with the description of the new species extending the range of the genus beyond the Upper Rio Negro region of Brazil (Amazonas) and adjacent Venezuela (), to include Guyana, Suriname, and the Brazilian state of Pará.

Tetrameranthus (Annonaceae) revisited including a new species.

The taxonomic revision of the infrequently collected genus Tetrameranthus by Westra (1985) is updated. A new species is described from French Guiana and Amapá, Brazil, increasing the number of species in this genus to seven.