ABSTRACT
The genus Crustoderma is emended to include nine species, and all, except C. longicystidium, are associated with brown-rot decay of wood. Two new species, C. carolinense and C. marianum, are described and illustrated. New combinations of C. corneum, C. longicystidium, and C. patricium are proposed. Peniophora weiri Bres. is placed in synonymy with C. dryinum. Culture descriptions are included for C. marianum and C. corneum. A key to the species is provided.