PhysmaPhysma is a genus of cyanolichens in the family Pannariaceae. It has five species. The genus was circumscribed by Italian lichenologist Abramo Bartolommeo Massalongo in 1854, with Physma boryanum assigned as the type species.SpeciesPhysma ahtianum Physma boryanum Physma byrsaeum Physma chilense ''Physma pseudoisidiatum''