Abstract
The Section Coloratae of the genus Peniophora is represented in Canada by Peniophora septentrionalis Laurila, frequently associated with a red stain and white rot in Picea spp., P. pithya (Pers.) J. Eriksson, not previously recorded from North America, and P. separans Burt, of which only two collections, made in 1921, were known. Descriptions of sporophores and cultures, with results of interfertility tests and records of hosts and geographical distribution, are presented for these species, for Stereum pini (Schleich. ex Fr.) Fr., associated with a red stain and white rot in Pinus spp., and for an undetermined species isolated from saprot in Pinus banksiana.

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