Catathelasma

About

Catathelasma is a genus of fungi in the family Biannulariaceae. Basidiocarps are agaricoid, with a conspicuous veil, adnate to decurrent lamellae, and amyloid basidiospores. The genus is separated on DNA characteristics as well as morphology. Species are known from North America, Europe, and Asia and are ectomycorrhizal, forming an association with the living roots of trees.

Summary from Wikipedia