NewTherryaspecies parasitic on western conifers

摘要

Three new species ofTherrya(Phacidiales) are described from diseased conifers in British Columbia, Canada, viz.T. pseudotsugaen.sp. onPseudotsuga menziesii(Mirb.) Franco,T. tsugaen.sp. onTsuga heterophylla(Raf.) Sarg., andT. piceaen.sp. onPicea glauca(Moench) Voss.