Dibben [Pertusariaceae] Pertusaria tuberculifera Nyl is misidentification for N.A., most specimens are P. paratuberculifera. Skorepa et al. (1977) – Frederick Co., on oak trunks. Skorepa et al. (1979) – on bark. Lendemer & Knapp (2007) - (1. Millington), (2. Idylwild), (5. Hickory Pt.), (6. Pocomoke) Pertusaria plittiana Erichsen [Pertusariaceae] Skorepa et al. (1979) – on acidic rock. Pertusaria propinqua Müll. Arg. [Pertusariaceae] Skorepa et al. (1979) – on bark. Lendemer & Knapp (2007) - (6. Pocomoke) Pertusaria pustulata (Ach.) Duby [Pertusariaceae] Skorepa et al. (1979) – on bark. E.C. Uebel Herbarium – Prince George's Co., on dead limb of deciduous tree. Lendemer & Knapp (2007) - (1. Millington) Pertusaria rubefacta Erichsen [Pertusariaceae] Skorepa et al. (1979) – on bark. Pertusaria subpertusa Brodo [Pertusariaceae] Skorepa et al. (1979) – on bark. Lendemer & Knapp (2007) - (2. Idylwild), (6. Pocomoke) Pertusaria tetrathalamia (Fée) Nyl. [Pertusariaceae] Skorepa et al. (1979) – on bark. Pertusaria texana Müll. Arg. [Pertusariaceae] Skorepa et al. (1979) – on bark. Lendemer & Knapp (2007) - (2. Idylwild) Pertusaria trachythallina Erichsen [Pertusariaceae] Skorepa et al. (1979) – on bark. Pertusaria velata (Turner) Nyl. [Pertusariaceae] Skorepa et al. (1977) – Frederick Co., in oak woods. Skorepa et al. (1979) – on bark. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.), (6. Pocomoke) Pertusaria waghornei Hulting [Pertusariaceae] Skorepa et al. (1979) – on bark. Pertusaria xanthodes Müll. Arg. [Pertusariaceae] Skorepa et al. (1977) – Harford Co., on tree bark. Skorepa et al. (1979) – on bark. E.G. Worthley Herbarium - Calvert Co.; Frederick Co.; Washington Co., on bark of Quercus velutina. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on bark of dead oak branch. Phaeocalicium curtisii (Tuck.) Tibell [Mycocaliciaceae] E.G. Worthley Herbarium - Baltimore Co., on twigs of Rhus glabra. Phaeocalicium polyporaeum (Nyl.) Tibell [Mycocaliciaceae] E.C. Uebel Herbarium – a specimen of Violet Toothed Polypore [Trichaptum biforme (Fries) Ryvarden] was collected with Flavoparmelia caperata (U-65) growing on the bark of a fallen oak tree at Liberty Reservoir in Baltimore County. The T. biforme had a stubble lichen growing on it which was identified by Dr. Steven Selva as Phaeocalicium polyporaeum. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown), (6. Pocomoke) Phaeographis inusta (Ach.) Müll. Arg. [Graphidaceae] Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown) Phaeophyscia adiastola (Essl.) Essl. [Physciaceae] Syns.: Physcia orbicularis (Necker) Poetsch; Phaeophyscia orbicularis (Necker) Moberg Skorepa et al. (1977) – Allegany Co.,