{Reference Type}: Journal Article
{Title}: New Cortinariaceae species associated with Dicymbe, Aldina, and Pakaraimaea in Guyana.
{Author}: Siegel N;Henkel TW;Adams S;Cooper J;Aime MC;
{Journal}: Mycologia
{Volume}: 0
{Issue}: 0
{Year}: 2024 Jul 11
{Factor}: 2.958
{DOI}: 10.1080/00275514.2024.2367399
{Abstract}: Species of the ectomycorrhizal (ECM) family Cortinariaceae (Agaricales, Agaricomycetes, Basidiomycota) have long been considered impoverished or absent from lowland tropical rainforests. Several decades of collecting in forests dominated by ECM trees in South America's Guiana Shield is countering this view, with discovery of numerous Cortinariaceae species. To date, ~12 morphospecies of this family have been found in the central Pakaraima Mountains of Guyana. Here, we describe three of these as new species of Cortinarius and two as new species of Phlegmacium from forests dominated by the ECM tree genera Dicymbe (Fabaceae subfam. Detarioideae), Aldina (Fabaceae subfam. Papilionoideae), and Pakaraimaea (Cistaceae). Macromorphological, micromorphological, habitat, and DNA sequence data are provided for each new species.