as P. nivosus & immaculatus with no Author given on label inside packet, and as Polyporus nivosus & immaculatus on outer label, name as NOT nivosus could be Polyporus immaculatus by Lowe 1977, several name notes on sheet, but Ryvarden 2001 says to file as Polyporus nivosus Berk.; immaculatus = nivosus Kew written on sheet as well as sheet filed in Polyporus, sheet transferred from Tyromyces leucomallus