(1979) – on bark. Heterodermia appalachensis (Kurok.) Culb. [Physciaceae] Skorepa et al. (1977) – Baltimore Co., on trunk of oak. Heterodermia granulifera (Ach.) Culb. [Physciaceae] Skorepa et al. (1977) – Montgomery Co., on trunk of Walnut tree. Skorepa et al. (1979) – on bark. Heterodermia hypoleuca (Muhl.) Trevisan [Physciaceae] Skorepa et al. (1977) – Frederick Co, on oak. Skorepa et al. (1979) – on bark. Biechele (2002) – lower eastern shore of Maryland. Heterodermia obscurata (Nyl.) Trevisan [Physciaceae] Skorepa et al. (1977) – Charles Co., on trunks of deciduous trees. Skorepa et al. (1979) – on bark, acidic rock. E.G. Worthley Herbarium - Baltimore Co., Gunpowder Falls, on tree trunk. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown) Heterodermia speciosa (Wulfen) Trevisan [Physciaceae] Syn.: Heterodermia tremulans (Müll. Arg.) W. Culb. Skorepa et al. (1977) – Washington Co., on trunks of deciduous trees. Skorepa et al. (1979) – on bark, acidic rock. E.G. Worthley Herbarium - Baltimore Co., Pretty Boy Dam. Lendemer & Knapp (2007) - (2. Idylwild), (6. Pocomoke) Hymenelia epulotica (Ach.) Lutzoni [Hymeneliaceae] Syn.: Ionaspis epulotica (Ach.) Blomb. & Forssell Skorepa et al. (1979) – on acidic rock. Hyperphyscia adglutinata (Flörke) H. Mayrh. [Physciaceae] Syn.: Physciopsis adglutinata (Flörke) M. Choisy Skorepa et al. (1979) – on bark. Hyperphyscia syncolla (Tuck. ex Nyl.) Kalb [Physciaceae] Syns.: Physcia syncolla Tuck. ex Nyl., Physciopsis syncolla (Tuck. ex Nyl.) Poelt Skorepa et al. (1977) – Wicomico Co., on oak trees. Skorepa et al. (1979) – on bark. Biechele (2002) – lower eastern shore of Maryland. Hypocenomyce scalaris (Ach.) M. Choisy [Lecideaceae] Syn.: Lecidea scalaris (Ach. ex Lilj.) Ach. Skorepa et al. (1979) – on bark, wood. E.G. Worthley Herbarium - Lichens of Soldiers Delight, on trunk of pine. Hypogymnia krogiae Ohlsson [Parmeliaceae] Skorepa et al. (1977) – Garrett Co., on conifer bark. Skorepa et al. (1979) – on bark. Hypogymnia physodes (L.) Nyl. [Parmeliaceae] Skorepa et al. (1977) – Garrett Co., on tree trunks. Skorepa et al. (1979) – on bark, acidic rock. E.C. Uebel Herbarium – Baltimore Co., on bark of Norway Maple. Hypotrachyna livida (Taylor) Hale [Parmeliaceae] Syn.: Parmelia livida Taylor Skorepa et al. (1977) – Sommerset Co., on branches of deciduous trees. Skorepa et al. (1979) – on bark. Biechele (2002) – lower eastern shore of Maryland. E.G. Worthley Herbarium - Wicomico Co.; Worcester Co., Milburn Landing, on branches. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown), (6.