Parmelia appalachensis Culb. Skorepa et al. (1979) – on bark. Punctelia bolliana (Müll. Arg.) Krog [Parmeliaceae] Syn.: Parmelia bolliana Müll. Arg. Skorepa et al. (1979) – on bark. Punctelia borreri (Sm.) Krog [Parmeliaceae] Syn.: Parmelia borreri (Sm.) Turner Skorepa et al. (1979) – on bark. Punctelia missouriensis G. Wilh. & Ladd Lendemer & Knapp (2007) - (2. Idylwild) Punctelia perreticulata (Räsänen) G. Wilh. & Ladd [Parmeliacae] Syns.: Punctelia subrudecta (Nyl.) Krog, Parmelia subrudecta Nyl. Skorepa et al. (1977) – Lichens of Soldiers Delight. Skorepa et al. (1979) – on bark, acidic rock. Biechele (2002) – lower eastern shore of Maryland. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Baltimore Co., Owings Mills, on bark. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Baltimore Co., on bark of Norway Maple. Lendemer & Knapp (2007) - (4. Sharptown) Punctelia rudecta (Ach.) Krog [Parmeliaceae] Syn.: Parmelia rudecta Ach. Skorepa et al. (1977) – Caroline Co., on trunks of trees. Skorepa et al. (1979) – on bark, acidic rock. Biechele (2002) – lower eastern shore of Maryland. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Baltimore Co., Ivy Mill Road, on bark; Calvert Co.; Wicomico Co.; Carroll Co., on bark of Tulip Tree. E.C. Uebel Herbarium – Prince George's Co., on dead limb; Carroll Co., Liberty Reservoir, on bark. Lendemer & Knapp (2007) - (1. Millington), (5. Hickory Pt.), (6. Pocomoke) Pycnothelia papillaria Dufour [Cladoniaceae] Skorepa et al. (1977) – Prince George's Co., along dirt road. Skorepa et al. (1979) – on soil. Biechele (2002) – lower eastern shore of Maryland. E.C. Uebel Herbarium – Lichens of Soldiers Delight. Pyrenula pseudobufonia (Rehm) R.C. Harris [Pyrenulaceae] Syn.: Pyrenula neglecta R.C. Harris Skorepa et al. (1979) – on bark. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.) Pyrenula punctella Trevis. [Pyrenulaceae] Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke) Pyrenula subelliptica (Tuck.) R.C. Harris [Pyrenulaceae] Syn.: Pyrenula imperfecta (Ellis & Everh.) R.C. Harris Skorepa et al. (1979) – on bark. Pyrrhospora varians (Ach.) R.C. Harris [Lecanoraceae] Syn.: Lecidea varians Ach. Skorepa et al. (1977) – Worcester Co., on twigs of Myrica. Skorepa et al. (1979) – on bark. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.), (6. Pocomoke) Pyxine caesiopruinosa (Tuck.) Imshaug [Physciaceae] Skorepa et al. (1977) – Howard Co., on tree. Skorepa et al. (1979) – on bark. E.G. Worthley Herbarium - Baltimore Co., on bark of Juglans nigra;