The following taxa are newly reported for Pennsylvania: Acarospora dispersa, A. tuckerae, Anisomeridium biforme, Arthonia quintaria, Aspicilia caesiocinerea, Bacidia beckhausii, B. helicospora, B. rubella, Biatora pontica, Buellia badia, Canoparmelia texana, Carbonea latypizodes, Cladonia gracilis subsp. turbinata, Collema bachmanianum, Distopyrenis americana, Illosporium carneum, Lecidea plebeja, Lecidea tessellata, Lecidella stigmatea, Leptorhaphis epidermidis, Melanelia stygia, Micarea micrococca, Myelochroa metarevoluta, Nephroma parile, Parmeliella triptophylla, Parmotrema perforatum, P. subisidiosum, Pertusaria consocians, P. texana, Phaeospora rimosicola, Physcia halei, Placidiopsis minor, Pseudosagedia raphidosperma, Ramalina pollinaria, Rinodina excrescens, R. papillata, Sclerococcum simplex, Tremella cladoniae, and Usnea amblyoclada. A modern report of Bacidia diffracta is documented. The geographic distribution and present day status of Acarospora tuckerae are discussed.