(Boletaceae, Basidiomycota) - a new monotypic sequestrate genus and species from Brazilian Atlantic Forest.

A new monotypic sequestrate genus, is described based on collections from the Neotropical forest of Atlantic forest in Paraíba, Northeast Brazil - an area known for its high degree of endemism. The striking features of this new fungus are the hypogeous habit, the vivid yellow peridium in mature basidiomes, broadly ellipsoid basidiospores with a distinct wall that is ornamented with longitudinal striations and lageniform cystidia with rounded apices. Phylogenetic analysis, based on LSU and regions, showed that the type species, , is phylogenetically sister to the monotypic sequestrate African genus in Boletaceae. Together these two species formed the earliest diverging lineage in the subfamily Zangioideae. is found in nutrient-poor white sand habitats where plants in the genera (Polygonaceae) and (Nyctaginaceae) are the only potential ectomycorrhizal host symbionts.