Crustomyces The following new taxa are proposed: Australohydnum gen. nov. (based on Hydnum griseo-fuscescens Reich.), Ceraceohydnum brunneum gen. et spec. nov. gen. nov. (based on Odontia subabrupta Bourd. & Galz.), Megalocystidium gen. nov. (based on Corticium leucoxanthum Bres.), Phlebiopsis gen. nov. (based on Thelephora gigantea Fr.), and Scotomyces gen. nov. (based on Corticium fallax). Seven new combinations are proposed.