– Baltimore Co., on serpentine rocks. Skorepa et al. (1979) (Parmelia taractica) – on acidic rock. E.G. Worthley Herbarium (Parmelia taractica); Allegany Co. (Parmelia taractica), Green Ridge State Forest, on red shale; Carroll Co. (Parmelia taractica), Church of the Brethren, on stone wall. Xanthoria parietina? (L.) Th. Fr. [Teloschistaceae] Biechele (2002) – lower eastern shore of Maryland. References Biechele, Lance T. 2002. The lichen flora of the lower Eastern Shore of the Delmarva Peninsula. Evansia 19 (1): 17–19. Lendemer, J. C., and W. M. Knapp. 2007. Contributions to the lichen flora of Maryland: recent collections from the Delmarva Peninsula. Opuscula Philolichenum 4: 23–40. Skorepa, A. C., A. W. Norden and D. R. Windler. 1977. Studies on the lichens of Maryland. [Annotated checklist]. Castanea 42 (4): 265–279. Skorepa, A. C., A. W. Norden and D. R. Windler. 1979. Substrate ecology of lichens in Maryland. Castanea 44 (3): 129–142. Lists of lichens Lichens