spp. Associated with Appalachian Oak Forests and Waterways in Pennsylvania, with . as a Pathogen of Five Native Woody Plant Species.

To document the distribution of potentially harmful spp. within Pennsylvania, the Pennsylvania Department of Agriculture collected 89 plant, 137 soil, and 48 water samples from 64 forested sites during 2018 to 2020. In total, 231 strains were isolated using baiting assays and identified based on morphological characteristics and sequences of nuclear and mitochondrial loci. Twenty-one spp. in nine clades and one unidentified species were present. , a recently described clade 7a species, was recovered from diseased tissue of 10 native broadleaved plants and twice from soil from 12 locations. . is most likely endemic to Pennsylvania based on pathogenicity tests on six native plant species, intraspecific genetic diversity, wide distribution, and recoveries from Mill. and Carrière plantations dating back to 1989. Cardinal temperatures and morphological traits are provided for this species. Other taxa, in decreasing order of frequency, include . , . , . , . , . x, . , . , . , . , . , . , . x, . , . , 'bitahaiensis', . , . , . , . , and . . Twelve species were associated with diseased plant tissues. This survey documented 53 new plant- associations and expanded the known distribution of some species.