Russulaceae of the Pakaraima Mountains of Guyana. IV. New species forming a distinct lineage of subg. .

The Neotropics have recently emerged as an important region for studies of tropical ectomycorrhizal (ECM) fungi. Specific neotropical areas with high ECM host tree densities have ECM fungal diversities rivaling those of higher-latitude forests. Some forests of the Guiana Shield are dominated by endemic ECM trees of the Fabaceae, including species of (subfam.

Three independent evolutionary events of sequestrate species in Australasia.

Three Australian species with sequestrate basidiome forms are recorded for the first time in the genus based on nuclear ITS-LSU and morphological data. These species represent three rare independent evolutionary events resulting in sequestrate basidiomes arising from agaricoid species in three different sections in two subgenera. All three species have highly reduced basidiome forms, and no species with intermediate forms have been found.

Untangling the () species complex in Australasia.

The complex is a commonly observed, generally brightly coloured, group of mushrooms that are usually associated with or Myrtaceous hosts in Australia and New Zealand. For this study collections labelled as '', '' and '' were examined morphologically and molecularly. Analyses of molecular data showed a high cryptic diversity, with sequences scattered across 11 clades in three subgenera within , and a single collection in We select epitypes to anchor the currently accepted concepts of s.

A short story of nearly everything in ().

Fungi are a large and hyper-diverse group with major taxa present in every ecosystem on earth. However, compared to other eukaryotic organisms, their diversity is largely understudied. Since the rise of molecular techniques, new lineages are being discovered at an increasing rate, but many are not accurately characterised.