What is "norrlinia"

Norrlinia is a genus of fungi in the family Verrucariaceae. Most members of Verrucariales, as in other lichenized lineages, form typical thallus morphologies, including crustose, squamulose, foliose and rarely subfruticose thalli. Four species of Agonimia can form a monophyletic group together with Norrlinia. Finland has 223 species of Polypores, one of which is Norrlinia. Norrlinia decays trees at a fast rate, but is kept under control in Finland and Russia, the two major countries that are known to have Norrlinia.