Abstract
We review the diversity of phlegmacioid (Cortinariaceae) taxa in New Zealand as well as in other parts of the Southern Hemisphere. Using a 4-locus molecular phylogeny, it is shown that these taxa are represented in six of the ten recently recognised genera of Cortinariaceae. These are discussed, their taxonomy is analysed, and a key is provided. Eight new species (Mystinarius badiohepaticus, Phlegmacium medburyensis, Ph. tinelineicus, Thaxterogaster artosinus, Th. artosoides, Th. porcellanoides, Th. pseudoaustralis, Th. subdulciorum) and two new sections (Phlegmacium sect. Rufoaurantia, Thaxterogaster sect. Artosoides) are proposed.