sourceTaxonName: Verrucaria nigrescens Pers.
sourceTaxonPath: Fungi | Ascomycota | Eurotiomycetes | Verrucariales | Verrucariaceae | Verrucaria | Verrucaria nigrescens
targetTaxonName: rocks
localityName: Squaw Vailey Creek. Near the head of the creek in the area bordered by heather meadows, Mt. Shasta