On the identity of the new family Pycnanthaceae Ravenna

Resumo

The taxonomic position of a new family of flowering plants recently described, Pycnanthaceae Ravenna, is here discussed;
as a result of comparison of type material, this new taxon is placed in the synonymy of the genus Malaxis within the
Orchidaceae. A list of species of Malaxis growing in Argentina is provided, as well as a key to differentiate them.