A monograph of the neotropical Gnetaceae

<jats:title>Abstract</jats:title> <jats:sec> <jats:title>Background and Aims</jats:title> <jats:p>After having contributed treatments of Gnetum for various regional floras in the neotropics, it was decided to produce a monograph of the genus for the new world.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>Specimen data from herbarium species were collected and recorded. Type specimens and synonymy were determined for each species.</jats:p> </jats:sec> <jats:sec> <jats:title>Key Results</jats:title> <jats:p>A new species endemic to Vaupés, Colombia is described and illustrated. It is compared to the other neotropical species of Gnetum. A key to the nine neotropical Gnetum species is given as well as descriptions of those species with relevant specimen citations, distributions, and images.</jats:p> </jats:sec>