my-server
← Wiki Redirected from Lichens of Maryland

List of lichens of Maryland

The following list of lichens of Maryland is derived from the following sources:

  • (1) lichens listed in the 1977 publication by Skorepa (Allen C. Skorepa), Norden https://www.pwrc.usgs.gov/resshow/perry/bios/NordenArnold.htm, and Windler.
  • (2) lichens listed in the 1979 publication by Skorepa, Norden, and Windler.
  • (3) lichens listed in the 2002 publication by Biechele as occurring on Maryland's Delmarva Peninsula.
  • (4) lichens in Elmer Worthley's personal herbarium.
  • (5) lichens found in Maryland by Edward Uebel.
  • (6) lichens reported on Maryland's Delmarva Peninsula by Lendemer and Knapp (2007) at six locations: 1. Millington State Wildlife Management Area (1. Millington); 2. Idylwild State Wildlife Management Area (2. Idylwild); 3. Chesapeake State Forest (3. Chesapeake); 4. Sharptown Dunes (4. Sharptown); 5. Hickory Point Cypress Swamp (5. Hickory Pt.); 6. Pocomoke State Forest (6. Pocomoke).

List

  1. Acarospora fuscata (Schrader) Arnold   [Acarosporaceae]
  2. Skorepa et al. (1979) – on acidic rock.
  3. E.G. Worthley Herbarium - Carroll Co., on stone wall.
  4. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  5. Acarospora schleicheri (Ach.) A. Massal.   [Acarosporaceae]
  6. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  7. Skorepa et al. (1979) – on acidic rock.
  8. Ahtiana aurescens (Tuck.) Thell & Randlane   [Parmeliaceae]
  9. Syn.: Cetraria aurescens Tuck.
  10. Skorepa et al. (1977) – Allegany Co., on branches of pines.
  11. Skorepa et al. (1979) – on bark.
  12. Allocetraria oakesiana (Tuck.) Randlane & Thell   [Parmeliaceae]
  13. Syn.: Cetraria oakesiana Tuck.
  14. Skorepa et al. (1977) – Frederick Co., base of oak.
  15. Skorepa et al. (1979) – on bark, acidic rock.
  16. E.G. Worthley Herbarium - Garrett Co., along Big Run, on stumps.
  17. Amandinea milliaria (Tuck.) P. May & Sheard   [Physciaceae]
  18. Syn.: Rinodina milliaria Tuck.
  19. Skorepa et al. (1977) – Calvert Co., on trunks of deciduous trees.
  20. Skorepa et al. (1979) – on bark.
  21. Biechele (2002) – lower eastern shore of Maryland.
  22. Amandinea polyspora (Willey) E. Lay & P. May   [Physciaceae]
  23. Syn.: Buellia polyspora (Willey) Vainio
  24. Skorepa et al. (1977) – Carroll Co., bark of deciduous tree.
  25. Skorepa et al. (1979) – on bark.
  26. E.C. Uebel Herbarium – Baltimore Co., Ridge Rd., on bark of Norway Maple.
  27. Amandinea punctata (Hoffm.) Coppins & Scheid.   [Physciaceae]
  28. Syn.: Buellia punctata (Hoffm.) Massal.
  29. Skorepa et al. (1977) – Worcester Co., on oak twigs.
  30. Skorepa et al. (1979) – on bark.
  31. Lendemer & Knapp (2007) - (2. Idylwild)
  32. Anaptychia palmulata (Michaux) Vainio   [Physciaceae]
  33. Skorepa et al. (1977) – Calvert Co., trunks of deciduous trees.
  34. Skorepa et al. (1979) – on bark.
  35. Biechele (2002) – lower eastern shore of Maryland.
  36. E.G. Worthley Herbarium - Baltimore Co.; Calvert Co.; Frederick Co.
  37. Anisomeridium polypori (Ellis & Everh.) M.E. Barr   [Monoblastiaceae]
  38. Lendemer & Knapp (2007) - (4. Sharptown)
  39. Anzia americana Yoshim. & Sharp   [Parmeliaceae]
  40. Lendemer & Knapp (2007) - (6. Pocomoke)
  41. Anzia colpodes (Ach.) Stizenb.   [Parmeliaceae]
  42. Skorepa et al. (1979) – on bark.
  43. Lendemer & Knapp (2007) - (6. Pocomoke)
  44. Arctoparmelia centrifuga? (L.) Hale   [Parmeliaceae]
  45. E.G. Worthley Herbarium - Baltimore Co., Owings Mills.
  46. Arthonia caesia (Flotow) Körber   [Arthoniaceae]
  47. Skorepa et al. (1977) – Baltimore Co., trunk of oak.
  48. Skorepa et al. (1979) – on bark.
  49. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on bark; Ridge Road, on bark.
  50. Lendemer & Knapp (2007) (1. Millington)
  51. Arthonia rubella (Fée) Nyl.   [Arthoniaceae]
  52. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  53. Arthopyrenia cinereopruinosa (Schaerer) A. Massal.   [Arthopyreniaceae]
  54. Syn.: Arthopyrenia pinicola (Hepp) Mass.
  55. Skorepa et al. (1977) – Montgomery Co., trunk of elm.
  56. Skorepa et al. (1979) – on bark.
  57. Arthothelium interveniens (Nyl.) Zahlbr.   [Arthoniales]
  58. Lendemer & Knapp (2007) - (6. Pocomoke)
  59. Aspicilia caesiocinerea (Nyl. ex Malbr.) Arnold   [Hymeneliaceae]
  60. Syn.: Lecanora caesiocinerea Nyl.
  61. Skorepa et al. (1977) – Allegany Co., on shale outcrop.
  62. Skorepa et al. (1979) – on acidic rock.
  63. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Montgomery Co., Great Falls.
  64. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on acidic rock.
  65. Aspicilia cinerea (L.) Körber   [Hymeneliaceae]
  66. Syn.: Lecanora cinerea (L.) Somm.
  67. Skorepa et al. (1977) – Baltimore Co., on rock ledges.
  68. Skorepa et al. (1979) – on acidic rock.
  69. E.G. Worthley Herbarium - Frederick Co., Cunningham Falls.
  70. Bacidia laurocerasi (Delise ex Duby) Zahlbr. subsp. laurocerasi   [Bacidiaceae]
  71. Syn.: Bacidia atrogrisea (Delilse ex Hepp) Körber
  72. Skorepa et al. (1979) – on bark.
  73. Bacidia polychroa (Th. Fr.) Körber   [Bacidiaceae]
  74. Syn.: Bacidia fuscorubella (Hoffm.) Bausch.
  75. Skorepa et al. (1977) – Baltimore Co., on trunks of deciduous trees.
  76. Skorepa et al. (1979) – on bark.
  77. Bacidia schweinitzii (Fr. ex E. Michener) A. Schneider   [Bacidiaceae]
  78. Skorepa et al.. (1977) – Montgomery Co., on oak.
  79. Skorepa et al. (1979) – on bark.
  80. Biechele (2002) – lower eastern shore of Maryland.
  81. E.G. Worthley Herbarium – Lichens of Soldiers Delight; Anne Arundel Co., Baltimore Co., Wicomico Co.
  82. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown), (5. Hickory Pt.), (6. Pocomoke)
  83. Bacidia trachona (Ach.) Lettau   [Bacidiaceae]
  84. Skorepa et al. (1979) – on calcareous rock.
  85. Bacidina egenula (Nyl.) Vězda   [Bacidiaceae]
  86. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  87. Bacidina inundata (Fr.) Vezda   [Bacidiaceae]
  88. Skorepa et al. (1979) – on bark.
  89. Baculifera curtisii (Tuck.) Marbach   [Physciaceae]
  90. Syn.: Buellia curtisii (Tuck.) Imsh.
  91. Skorepa et al.. (1977) – Calvert Co., trunk of deciduous tree.
  92. Skorepa et al. (1979) – on bark.
  93. Bathelium carolinianum (Tuck.) R.C. Harris   [Trypetheliaceae]
  94. Lendemer & Knapp (2007) - (6. Pocomoke)
  95. Biatora vernalis (L.) Fr.   [Bacidiaceae]
  96. Syn.: Lecidea vernalis (L.) Ach.
  97. Skorepa et al. (1977) – Frederick Co., on trunks of oaks.
  98. Skorepa et al. (1979) – on bark.
  99. Brigantiaea leucoxantha (Spreng.) R. Sant. & Haffel.   [Brigantiaeaceae]
  100. Biechele (2002) – lower eastern shore of Maryland.
  101. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  102. Bryoria furcellata (Fr.) Brodo & D. Hawksw.   [Parmeliaceae]
  103. Syn.: Alectoria nidulifera Norrl.
  104. Skorepa et al. (1977) – Garrett Co., on pine trunks.
  105. Skorepa et al. (1979) – on bark, acid rock.
  106. E.G. Worthley Herbarium - Wicomico Co.
  107. Buellia badia (Fr.) Massal.   [Physciaceae]
  108. Syn.: Buellia turgescens Tuck.
  109. E.G. Worthley Herbarium - Baltimore Co., St. Thomas Cemetery.
  110. Buellia curtisii (Tuck.) Imshaug   [Physciaceae]
  111. Lendemer & Knapp (2007) (1. Millington), (3. Chesapeake)
  112. Buellia spuria (Schaerer) Anzi   [Physciaceae]
  113. Skorepa et al. (1977) – Montgomery Co. (collection by Fink)
  114. Skorepa et al. (1979) – on acidic rock.
  115. E.G. Worthley Herbarium – Lichens of Soldiers Delight.
  116. Buellia stigmaea Tuck.   [Physciaceae]
  117. Skorepa et al. (1977) – Baltimore Co., (collected by Plitt)
  118. Skorepa et al. (1979) – on acidic rock.
  119. Buellia stillingiana J. Steiner   [Physciaceae]
  120. Skorepa et al. (1977) – Calvert Co., on trunks of deciduous trees.
  121. Skorepa et al. (1979) – on bark.
  122. Biechele (2002) – lower eastern shore of Maryland.
  123. E.G. Worthley Herbarium - Worcester Co.
  124. Lendemer & Knapp (2007) - (4. Sharptown)
  125. Buellia vernicoma Tuck.   [Physciaceae]
  126. Lendemer & Knapp (2007) - (6. Pocomoke)
  127. Byssoloma leucoblepharum Vainio   [Pilocarpaceae]
  128. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  129. Byssoloma meadii (Tuck.) S. Ekman   [Pilocarpaceae]
  130. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  131. Calicium salicinum Pers.   [Caliciaceae]
  132. Lendemer & Knapp (2007) - (6. Pocomoke)
  133. Caloplaca camptidia (Tuck.) Zahlbr.   [Teloschistaceae]
  134. Skorepa et al. (1977) – Montgomery Co., oak woods.
  135. Skorepa et al. (1979) – on bark.
  136. Caloplaca cerina (Ehrh. ex Hedwig) Th. Fr.   [Teloschistaceae]
  137. Skorepa et al. (1977) – Garrett Co., on aspen trunks.
  138. Skorepa et al. (1979) – on bark.
  139. Caloplaca citrina (Hoffm.) Th. Fr.   [Teloschistaceae]
  140. Skorepa et al. (1977) – Baltimore Co., on concrete bridge.
  141. Skorepa et al. (1979) – on cement.
  142. Biechele (2002) – lower eastern shore of Maryland.
  143. E.G. Worthley Herbarium – Lichens of Soldiers Delight; Baltimore Co., on wall of stone and cement.
  144. Caloplaca feracissima H. Magn.   [Teloschistaceae]
  145. Skorepa et al. (1977) – Frederick Co., on concrete.
  146. Skorepa et al. (1979) – on cement.
  147. E.G. Worthley Herbarium – Lichens of Soldiers Delight.
  148. E.C. Uebel Herbarium – Prince George's Co., on hill of concrete.
  149. Caloplaca flavorubescens (Hudson) J. R. Laundon   [Teloschistaceae]
  150. Syn.: Caloplaca aurantiaca (Lightf.) Th. Fr.
  151. Skorepa et al. (1977) – Allegany Co., on cement.
  152. Skorepa et al. (1979) – on cement.
  153. E.G. Worthley Herbarium - Baltimore Co., Owings Mills.
  154. Caloplaca flavovirescens (Wulfen) Dalla Torre & Sarnth.
  155. Skorepa et al. (1977) – Washington Co., on limestone.
  156. Skorepa et al. (1979) – on calcareous rock, cement.
  157. Caloplaca holocarpa (Hoffm. ex Ach.) M. Wade   [Teloschistaceae]
  158. Skorepa et al. (1977) – Frederick Co., on timbers.
  159. Skorepa et al. (1979) – on bark, calcareous rock, wood.
  160. Caloplaca lobulata (Flörke) de Lesd.   [Teloschistaceae]
  161. Skorepa et al. (1977) – Cecil Co., on serpentine rock.
  162. Skorepa et al. (1979) – acidic rock.
  163. E.G. Worthley Herbarium – Lichens of Soldiers Delight; Baltimore Co., on bricks.
  164. Caloplaca microphyllina (Tuck.) Hasse   [Teloschistaceae]
  165. Skorepa et al. (1979) – wood.
  166. Caloplaca oxfordensis Fink   [Teloschistaceae]
  167. Skorepa et al. (1977) – Washington Co., on limestone.
  168. Skorepa et al. (1979) – on acidic rock.
  169. Caloplaca sideritis (Tuck.) Zahlbr.   [Teloschistaceae]
  170. Skorepa et al. (1977) – Frederick Co., on cement foundation.
  171. Skorepa et al. (1979) – on acidic rock.
  172. E.G. Worthley Herbarium – Lichens of Soldiers Delight.
  173. Caloplaca subsoluta (Nyl.) Zahlbr.   [Teloschistaceae]
  174. Syn.: Caloplaca modesta (Zahlbr.) Fink
  175. Skorepa et al. (1977) – Montgomery Co. (collected by Fink)
  176. Skorepa et al. (1979) – on acidic rock.
  177. Candelaria concolor (Dickson) B. Stein   [Candelariaceae]
  178. Skorepa et al. (1977) – Allegany Co., on tree trunk.
  179. Skorepa et al. (1979) – on bark.
  180. E.G. Worthley Herbarium – Lichens of Soldiers Delight; Frederick Co.; Carroll Co.
  181. E.C. Uebel Herbarium – Baltimore Co.; Prince George's Co., on bark.
  182. Lendemer & Knapp (2007) - (2. Idylwild)
  183. Candelariella reflexa (Nyl.) Lettau   [Candelariaceae]
  184. Lendemer & Knapp (2007) - (3. Chesapeake)
  185. Candelariella vitellina (Hoffm.) Müll. Arg.   [Candelariaceae]
  186. Skorepa et al. (1977) – Baltimore Co., on rock face.
  187. Skorepa et al. (1979) – on acidic rock.
  188. E.G. Worthley Herbarium – Lichens of Soldiers Delight.
  189. Canoparmelia caroliniana (Nyl.) Elix & Hale   [Parmeliaceae]
  190. Syn.: Parmelia caroliniana Nyl.
  191. Skorepa et al. (1977) – Worcester Co., on tree trunks.
  192. Biechele (2002) – lower eastern shore of Maryland.
  193. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown), (6. Pocomoke)
  194. Canoparmelia crozalsiana (de Lesd. ex Harm.) Elix & Hale   [Parmeliaceae]
  195. Syn.: Parmelia crozalsiana B. de Lesd. ex Harm.
  196. Skorepa et al. (1977) – Frederick Co., on trunk of oak.
  197. Skorepa et al. (1979) – on bark.
  198. E.G. Worthley Herbarium - Talbot Co., on Sycamore.
  199. Lendemer & Knapp (2007) - (2. Idylwild)
  200. Canoparmelia texana (Tuck.) Elix & Hale   [Parmeliaceae]
  201. Syn.: Parmelia texana Tuck.
  202. Skorepa et al. (1977) – Frederick Co., on trunk of maple.
  203. Skorepa et al. (1979) – on bark.
  204. Lendemer & Knapp (2007) - (2. Idylwild)
  205. Catapyrenium cinereum (Pers.) Körber   [Verrucariaceae]
  206. Syn.: Dermatocarpon hepaticum (Ach.) Th. Fr.
  207. Skorepa et al. (1979) – on soil.
  208. E.G. Worthley Herbarium – Lichens of Soldiers Delight.
  209. Catillaria chalybeia (Borrer) A. Massal.   [Catillariaceae]
  210. Skorepa et al. (1977) – Frederick Co., on rocks.
  211. Skorepa et al. (1979) – on acidic rock.
  212. Cetraria arenaria Kärnefelt   [Parmeliaceae]
  213. Syn.: Cetraria islandica (L.) Ach.
  214. Skorepa et al. (1977) – Garrett Co., on soil.
  215. Skorepa et al. (1979) – on soil.
  216. E.G. Worthley Herbarium - Garrett Co., Carey Run.
  217. Cetrelia cetrarioides (Duby) Culb. & C. Culb.   [Parmeliaceae]
  218. E.G. Worthley Herbarium - Baltimore Co., Owings Mills, on oak.
  219. Cetrelia chicitae (W. Culb.) W. Culb. & C. Culb.   [Parmeliaceae]
  220. Skorepa et al. (1977) – Garrett Co., on conglomerate.
  221. Skorepa et al. (1979) – on bark, acidic rock.
  222. E.G. Worthley Herbarium - Frederick Co., Mt. Catoctin Park.
  223. Cetrelia olivetorum (Nyl.) Culb. & C. Culb.   [Parmeliaceae]
  224. Skorepa et al. (1977) – Allegany Co., on trunk of deciduous tree.
  225. Skorepa et al. (1979) – on bark.
  226. Chrismofulvea dialyta (Nyl.) Marbach   [Physciaceae]
  227. Syn.: Buellia dialyta (Nyl.) Tuck.
  228. Skorepa et al. (1979) – on bark.
  229. Chrysothrix candelaris (L.) J. R. Laundon   [Chrysotrichaceae]
  230. Syn.: Lepraria candelaris (L.) Fr.
  231. Skorepa et al. (1979) – on bark.
  232. E.G. Worthley Herbarium - Montgomery Co., on rock outcrop.
  233. E.C. Uebel Herbarium – Baltimore Co., Hollofield, on rock cliff.
  234. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  235. Chrysothrix flavovirens Tønsberg s. lat.   [Chrysotrichaceae]
  236. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  237. Cladonia apodocarpa Robbins   [Cladoniaceae]
  238. Skorepa et al. (1977) – Frederick Co., on soil.
  239. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Baltimore Co., Gunpowder Falls; Allegany Co.
  240. Cladonia arbuscula (Wallr.) Flotow   [Cladoniaceae]
  241. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  242. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Allegany Co., Green Ridge State Forest; Wicomico Co.
  243. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  244. Cladonia atlantica A. Evans   [Cladoniaceae]
  245. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  246. Biechele (2002) – lower eastern shore of Maryland.
  247. Cladonia beaumontii (Taylor) Vainio   [Cladoniaceae]
  248. Biechele (2002) – lower eastern shore of Maryland.
  249. Cladonia boryi Tuck.   [Cladoniaceae]
  250. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  251. This is probably a misidentification of Cladonia caroliniana.
  252. Cladonia caespiticia (Pers.) Flörke   [Cladoniaceae]
  253. Skorepa et al. (1977) – Worcester Co., on sandy soil.
  254. Biechele (2002) – lower eastern shore of Maryland.
  255. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Carroll Co., Liberty Reservoir.
  256. Cladonia cariosa (Ach.) Sprengel   [Cladoniaceae]
  257. E.G. Worthley Herbarium - Lichens of Soldiers Delight.
  258. Cladonia caroliniana Tuck.   [Cladoniaceae]
  259. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  260. Cladonia cervicornis subsp. verticillata (Hoffm.) Ahti   [Cladoniaceae]
  261. Syn.: Cladonia verticillata (Hoffm.) Schaer.
  262. Skorepa et al. (1977) – Queen Anne's Co., on soil.
  263. Biechele (2002) – lower eastern shore of Maryland.
  264. E.G. Worthley Herbarium - Worcester Co.; Queen Anne's Co.; Baltimore Co.
  265. Cladonia chlorophaea (Flörke ex Sommerf.) Sprengel   [Cladoniaceae]
  266. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  267. Biechele (2002) – lower eastern shore of Maryland.
  268. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Prince George's Co.; Anne Arundel Co.; Washington Co.
  269. Cladonia coniocraea (Flörke) Sprengel   [Cladoniaceae]
  270. Skorepa et al. (1977) – Garrett Co., on base of pine.
  271. Biechele (2002) – lower eastern shore of Maryland.
  272. E.G. Worthley Herbarium - Baltimore Co.; Calvert Co.
  273. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Baltimore Co., Liberty Reservoir.
  274. Cladonia cristatella Tuck.   [Cladoniaceae]
  275. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  276. Biechele (2002) – lower eastern shore of Maryland.
  277. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Prince George's Co.; Garrett Co., Swallow Falls.
  278. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Prince George's Co., Greenbelt.
  279. Cladonia didyma (Fée) Vainio var. didyma   [Cladoniaceae]
  280. Lendemer & Knapp (2007) - (2. Idylwild)
  281. Cladonia fimbriata (L.) Fr.   [Cladoniaceae]
  282. Skorepa et al. (1977) – Garrett Co., on sandstone boulder.
  283. E.G. Worthley Herbarium - Garrett Co.; Allegany Co., Green Ridge State Forest.
  284. Cladonia floerkeana (Fr.) Flörke   [Cladoniaceae]
  285. Skorepa et al. (1977) – Harford Co., on rotting wood.
  286. Cladonia furcata (Hudson) Schrader   [Cladoniaceae]
  287. Skorepa et al. (1977) – Harford Co., on moss.
  288. Cladonia gracilis (L.) Willd. subsp. gracilis   [Cladoniaceae]
  289. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  290. E.G. Worthley Herbarium - Lichens of Soldiers Delight.
  291. Cladonia grayi Merr. ex Sandst.   [Cladoniaceae]
  292. Biechele (2002) – lower eastern shore of Maryland.
  293. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  294. Lendemer & Knapp (2007) - (2. Idylwild), (3. Chesapeake)
  295. Cladonia incrassata Flörke   [Cladoniaceae]
  296. Skorepa et al. (1977) – Wicomico Co., on sandy soil.
  297. Lendemer & Knapp (2007) - (2. Idylwild), (6. Pocomoke)
  298. Cladonia macilenta Hoffm.   [Cladoniaceae]
  299. Skorepa et al. (1977) – Harford Co., on rotting wood.
  300. E.C. Uebel Herbarium – Carroll Co., Liberty Reservoir; Prince Georges Co., College Park.
  301. Lendemer & Knapp (2007) - (2. Idylwild)
  302. Cladonia macilenta var. bacillaris (Genth) Schaerer   [Cladoniaceae]
  303. Syn.: Cladonia bacillaris (Ach.) Nyl.
  304. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  305. Biechele (2002) – lower eastern shore of Maryland.
  306. E.G. Worthley Herbarium - Prince George's Co.
  307. E.C. Uebel Herbarium – Carroll Co., Liberty Reservoir.
  308. Lendemer & Knapp (2007) - (3. Chesapeake)
  309. Cladonia mateocyatha Robbins   [Cladoniaceae]
  310. Skorepa et al. (1977) – Baltimore Co., on exposed rocks.
  311. Cladonia ochrochlora Flörke   [Cladoniaceae]
  312. Lendemer & Knapp (2007) - (1. Millington)
  313. Cladonia parasitica (Hoffm.) Hoffm.   [Cladoniaceae]
  314. Skorepa et al. (1977) – Worcester Co., on pine stump.
  315. Biechele (2002) – lower eastern shore of Maryland.
  316. Lendemer & Knapp (2007) - (2. Idylwild)
  317. Cladonia peziziformis (With.) J.R. Laundon   [Cladoniaceae]
  318. Syn.: Cladonia capitata (Michx.) Spreng.
  319. Skorepa et al. (1977) – Kent Co., on embankment.
  320. Biechele (2002) – lower eastern shore of Maryland.
  321. E.G. Worthley Herbarium - Lichens of Soldiers Delight.
  322. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Prince George's Co., Greenbelt.
  323. Cladonia piedmontensis G. Merr.   [Cladoniaceae]
  324. Skorepa et al. (1977) – Wicomico Co., on soil.
  325. E.G. Worthley Herbarium - Baltimore Co.; Wicomico Co.
  326. Cladonia pleurota (Flörke) Schaerer   [Cladoniaceae]
  327. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  328. Biechele (2002) – lower eastern shore of Maryland.
  329. Cladonia polycarpia G. Merr.   [Cladoniaceae]
  330. Lendemer & Knapp (2007) - (3. Chesapeake)
  331. Cladonia polycarpoides Nyl.   [Cladoniaceae]
  332. Biechele (2002) – lower eastern shore of Maryland.
  333. Lendemer & Knapp (2007) - (2. Idylwild)
  334. Cladonia pyxidata (L.) Hoffm.   [Cladoniaceae]
  335. Skorepa et al. (1977) – Allegany Co., on bank of stream.
  336. E.G. Worthley Herbarium - Allegany Co., Green Ridge State Forest; Anne Arundel Co.; Carroll Co.; Washington Co.
  337. Cladonia ramulosa (With.) J.R. Laundon   [Cladoniaceae]
  338. E.G. Worthley Herbarium - Worcester Co., Milburn Landing.
  339. Lendemer & Knapp (2007) - (2. Idylwild)
  340. Cladonia rangiferina (L.) F.H. Wigg.   [Cladoniaceae]
  341. Skorepa et al. (1977) – Allegany Co., on soil.
  342. E.G. Worthley Herbarium - Calvert Co.; Wicomico Co.
  343. Cladonia rappii A. Evans   [Cladoniaceae]
  344. Syn.: Cladonia calycantha Del. ex Nyl.
  345. Skorepa et al. (1977) – Charles Co., on soil.
  346. Biechele (2002) – lower eastern shore of Maryland.
  347. E.G. Worthley Herbarium - Wicomico Co.
  348. Cladonia ravenelii Tuck.   [Cladoniaceae]
  349. Biechele (2002) – lower eastern shore of Maryland.
  350. Cladonia rei Schaerer   [Cladoniaceae]
  351. Syn.: Cladonia nemoxyna (Ach.) Nyl.
  352. Skorepa et al. (1977) – Garrett Co., on rocky soil.
  353. E.G. Worthley Herbarium - Garrett Co.
  354. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  355. Cladonia santensis Tuck.   [Cladoniaceae]
  356. Skorepa et al. (1977) – Dorchester Co., on soil.
  357. Biechele (2002) – lower eastern shore of Maryland.
  358. Cladonia squamosa Hoffm.   [Cladoniaceae]
  359. Skorepa et al. (1977) – Frederick Co., on basalt outcrop.
  360. Biechele (2002) – lower eastern shore of Maryland.
  361. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Washington Co.
  362. Lendemer & Knapp (2007) - (6. Pocomoke)
  363. Cladonia stellaris (Opiz) Pouzar & Vezda   [Cladoniaceae]
  364. Syn.: Cladonia alpestris (L.) Rabenh.
  365. Skorepa et al. (1977) – Garrett Co., on soil.
  366. Cladonia strepsilis (Ach.) Grognot   [Cladoniaceae]
  367. Skorepa et al. (1977) – Prince George's Co., on shoulder of road.
  368. E.G. Worthley Herbarium - Prince George's Co.
  369. Cladonia subcariosa Nyl.   [Cladoniaceae]
  370. Syns.: Cladonia clavulifera Vain., C. sobolescens Nyl. ex Vain.
  371. Skorepa et al. (1977) – Worcester Co., on sandy soil.
  372. Skorepa et al. (1977) – Kent Co., on soil.
  373. E.G. Worthley Herbarium - St. Mary's Co.; Wicomico Co.
  374. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Prince George's Co., Greenbelt.
  375. Lendemer & Knapp (2007) - (2. Idylwild)
  376. Cladonia subtenuis (Abbayes) Mattick   [Cladoniaceae]
  377. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  378. Biechele (2002) – lower eastern shore of Maryland.
  379. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Allegany Co.; Calvert County; St. Mary's Co.
  380. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Prince George's Co.
  381. Lendemer & Knapp (2007) - (2. Idylwild), (3. Chesapeake), (4. Sharptown)
  382. Cladonia turgida Hoffm.   [Cladoniaceae]
  383. Skorepa et al. (1977) – Wicomico Co., on soil.
  384. Cladonia uncialis (L.) F.H. Wigg.   [Cladoniaceae]
  385. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  386. Biechele (2002) – lower eastern shore of Maryland.
  387. Coccocarpia palmicola (Sprengel) Arv. & D.J. Galloway   [Coccocarpiaceae]
  388. Syn.: Coccocarpia cronia (Tuck.) Vain.
  389. Skorepa et al. (1977) – Montgomery Co., on rock outcrop.
  390. Skorepa et al. (1979) – on bark, acidic rock.
  391. Coenogonium luteum (Dicks.) Kalb & Lücking   [Gyalectaceae]
  392. Lendemer & Knapp (2007) - (6. Pocomoke)
  393. Coenogonium pineti (Ach.) Kalb & Lücking   [Gyalectaceae]
  394. Syn.: Dimerella diluta (Pers.) Trevisan
  395. Skorepa et al. (1979) – on wood, other.
  396. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  397. Collema coccophorum Tuck.   [Collemataceae]
  398. Skorepa et al. (1979) – on acidic rock.
  399. Collema conglomeratum Hoffm.   [Collemataceae]
  400. Skorepa et al. (1979) – on bark.
  401. Collema furfuraceum (Arnold) Du Rietz   [Collemataceae]
  402. Skorepa et al. (1977) – Allegany Co., on trunks of deciduous trees.
  403. Skorepa et al. (1979) – bark, acidic rock.
  404. E.G. Worthley Herbarium - Allegany Co., Terrapin Run, near base of tree trunk.
  405. Collema fuscovirens (With.) J.R. Laundon   [Collemataceae]
  406. Syn.: Collema tuniforme (Ach.) Ach.
  407. Skorepa et al. (1979) – on calcareous rock.
  408. Collema leptaleum Tuck.   [Collemataceae]
  409. Skorepa et al. (1979) – on bark.
  410. Collema subflaccidum Degel.   [Collemataceae]
  411. Skorepa et al. (1979) – acidic rock.
  412. E.G. Worthley Herbarium - Baltimore Co., Gunpowder River, on bark of Tulip Tree.
  413. Collema undulatum Laurer ex Flotow   [Collemataceae]
  414. Skorepa et al. (1979) – on acidic rock.
  415. Cyphelium tigillare (Ach.) Ach.   [Caliciaceae]
  416. Skorepa et al. (1979) – on wood.
  417. Dactylospora inquilina Hafellner   [Dactylosporaceae]
  418. Lendemer & Knapp (2007) - (5. Hickory Pt.) (on Pertusaria paratuberculifera)
  419. Dermatocarpon luridum (With.) J.R. Laundon   [Verrucariaceae]
  420. Syn.: Dermatocarpon fluviatile (G. Web.) Th. Fr.
  421. Skorepa et al. (1977) – Baltimore Co., on rocks.
  422. Skorepa et al. (1979) – on acidic rock.
  423. E.G. Worthley Herbarium - Carroll Co., in stream bed; Frederick Co., on boulder in stream.
  424. E.C. Uebel Herbarium – Baltimore Co., Hollofield, on moist rock.
  425. Dermatocarpon miniatum (L.) W. Mann   [Verrucariaceae]
  426. Skorepa et al. (1977) – Baltimore Co., on rock ledge.
  427. Skorepa et al. (1979) – on acidic rock, calcareous rock.
  428. E.G. Worthley Herbarium - Montgomery Co., Great Falls
  429. Dibaeis baeomyces (L. f.) Rambold & Hertel   [Icmadophilaceae]
  430. Syn.: Baeomyces roseus Pers.
  431. Skorepa et al. (1977) – Harford Co., on rock ledge.
  432. Skorepa et al. (1979) – on soil.
  433. Biechele (2002) – lower eastern shore of Maryland.
  434. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Howard Co.
  435. Dimelaena oreina (Ach.) Norman   [Physciaceae]
  436. Skorepa et al. (1977) – Allegany Co., on sandstone outcrop.
  437. Skorepa et al. (1979) – on acidic rock.
  438. Diploschistes scruposus (Schreber) Norman   [Thelotremataceae]
  439. Skorepa et al. (1979) – on acidic rock.
  440. Dirinaria frostii (Tuck.) Hale & Culb.   [Physciaceae]
  441. Skorepa et al. (1977) – Allegany Co., on shale outcrops.
  442. Skorepa et al. (1979) – on acidic rock.
  443. Endocarpon petrolepideum (Nyl.) Nyl.   [Verrucariaceae]
  444. E.C. Uebel Herbarium – Prince George's Co., Greenbelt, on hill of concrete (identified by Dr. Othmar Breuss, Vienna, Austria, Mar 2005).
  445. Endocarpon pusillum Hedwig   [Verrucariaceae]
  446. Skorepa et al. (1977) – Washington Co., on chert.
  447. Skorepa et al. (1979) – on calcareous rock, cement.
  448. Ephebe lanata (L.) Vainio   [Lichinaceae]
  449. Skorepa et al. (1979) – on acidic rock.
  450. Fissurina insidiosa Hook. & C. Knight   [Graphidaceae]
  451. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  452. Flavoparmelia baltimorensis (Gyelnik & Fóriss) Hale   [Parmeliaceae]
  453. Syn.: Parmelia baltimorensis Gyelnik & Fóriss
  454. Skorepa et al. (1977) – Baltimore Co., on rock outcrops.
  455. Skorepa et al. (1979) – on acidic rock.
  456. E.G. Worthley Herbarium - Harford Co., Rocks State Park, on acidic rock.
  457. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on boulders.
  458. Flavoparmelia caperata (L.) Hale   [Parmeliaceae]
  459. Syn.: Parmelia caperata (L.) Ach.
  460. Skorepa et al. (1977) – Lichens of Soldiers Delight, on rocks.
  461. Skorepa et al. (1979) – on bark, acidic rock.
  462. Biechele (2002) – lower eastern shore of Maryland.
  463. E.G. Worthley Herbarium - Calvert Co.; Frederick Co.; Worcester Co., on bark.
  464. E.C. Uebel Herbarium – Prince George's Co., on fallen tree limbs.
  465. Lendemer & Knapp (2007) - (4. Sharptown)
  466. Flavopunctelia flaventior (Stirton) Hale   [Parmeliaceae]
  467. Syn.: Parmelia flaventior Stirt.
  468. Skorepa et al. (1977) – Garrett Co., on oak.
  469. Skorepa et al. (1979) – on bark.
  470. E.G. Worthley Herbarium - Allegany Co.; Garrett Co., Casselman Bridge State Park.
  471. Flavopunctelia soredica (Nyl.) Hale   [Parmeliaceae]
  472. Syn.: Parmelia ulophyllodes (Vaino) Savicz
  473. Skorepa et al. (1979) – on bark.
  474. E.G. Worthley Herbarium - Baltimore Co., Gunpowder State Park.
  475. E.C. Uebel Herbarium – Baltimore Co., Ridge Rd., on bark of Norway Maple.
  476. Fuscopannaria leucophaea (Vahl) P.M. Jørg.   [Pannariaceae]
  477. Syn.: Parmeliella microphylla (Sw.) Müll. Arg.
  478. Skorepa et al. (1979) – on acidic rock.
  479. Fuscopannaria leucosticta (Tuck.) P.M. Jørg.   [Pannariaceae]
  480. Syn.: Pannaria leucosticta (Tuck.) Tuck. ex Nyl.
  481. Skorepa et al. (1979) – on bark.
  482. Gassicurtia vernicoma (Tuck.) Marbach   [Physciaceae]
  483. Syn.: Buellia vernicoma (Tuck.) Tuck.
  484. Skorepa et al. (1977) – (collected by Plitt)
  485. Skorepa et al. (1979) – on bark.
  486. Graphis scripta (L.) Ach.   [Graphidaceae]
  487. Skorepa et al. (1977) – Montgomery Co., on oak.
  488. Skorepa et al. (1979) – on bark.
  489. E.G. Worthley Herbarium - Baltimore Co., Pretty Boy Reservoir; Wicomico Co.
  490. E.C. Uebel Herbarium – Carroll Co., Liberty Reservoir, on tree bark.
  491. Hafellia disciformis (Fr.) Marbach & H. Mayrhofer   [Physciaceae]
  492. Syn.: Buellia disciformis (Fr.) Mudd
  493. Skorepa et al. (1977) – Anne Arundel Co.
  494. Skorepa et al. (1979) – on bark.
  495. Hertelidea botryosa (Fr.) Printzen & Kantvilas   [Stereocaulaceae]
  496. Syn.: Lecidea botryosa (Fr.) Th. Fr.
  497. Skorepa et al. (1979) – on wood.
  498. Heterodermia albicans (Pers.) Swinscow & Krog   [Physciaceae]
  499. Syn.: Heterodermia domingensis (Ach.) Trev.
  500. Skorepa et al. (1977) – Wicomico Co., on tree trunks.
  501. Skorepa et al. (1979) – on bark.
  502. Heterodermia appalachensis (Kurok.) Culb.   [Physciaceae]
  503. Skorepa et al. (1977) – Baltimore Co., on trunk of oak.
  504. Heterodermia granulifera (Ach.) Culb.   [Physciaceae]
  505. Skorepa et al. (1977) – Montgomery Co., on trunk of Walnut tree.
  506. Skorepa et al. (1979) – on bark.
  507. Heterodermia hypoleuca (Muhl.) Trevisan   [Physciaceae]
  508. Skorepa et al. (1977) – Frederick Co, on oak.
  509. Skorepa et al. (1979) – on bark.
  510. Biechele (2002) – lower eastern shore of Maryland.
  511. Heterodermia obscurata (Nyl.) Trevisan   [Physciaceae]
  512. Skorepa et al. (1977) – Charles Co., on trunks of deciduous trees.
  513. Skorepa et al. (1979) – on bark, acidic rock.
  514. E.G. Worthley Herbarium - Baltimore Co., Gunpowder Falls, on tree trunk.
  515. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown)
  516. Heterodermia speciosa (Wulfen) Trevisan   [Physciaceae]
  517. Syn.: Heterodermia tremulans (Müll. Arg.) W. Culb.
  518. Skorepa et al. (1977) – Washington Co., on trunks of deciduous trees.
  519. Skorepa et al. (1979) – on bark, acidic rock.
  520. E.G. Worthley Herbarium - Baltimore Co., Pretty Boy Dam.
  521. Lendemer & Knapp (2007) - (2. Idylwild), (6. Pocomoke)
  522. Hymenelia epulotica (Ach.) Lutzoni   [Hymeneliaceae]
  523. Syn.: Ionaspis epulotica (Ach.) Blomb. & Forssell
  524. Skorepa et al. (1979) – on acidic rock.
  525. Hyperphyscia adglutinata (Flörke) H. Mayrh.   [Physciaceae]
  526. Syn.: Physciopsis adglutinata (Flörke) M. Choisy
  527. Skorepa et al. (1979) – on bark.
  528. Hyperphyscia syncolla (Tuck. ex Nyl.) Kalb   [Physciaceae]
  529. Syns.: Physcia syncolla Tuck. ex Nyl., Physciopsis syncolla (Tuck. ex Nyl.) Poelt
  530. Skorepa et al. (1977) – Wicomico Co., on oak trees.
  531. Skorepa et al. (1979) – on bark.
  532. Biechele (2002) – lower eastern shore of Maryland.
  533. Hypocenomyce scalaris (Ach.) M. Choisy   [Lecideaceae]
  534. Syn.: Lecidea scalaris (Ach. ex Lilj.) Ach.
  535. Skorepa et al. (1979) – on bark, wood.
  536. E.G. Worthley Herbarium - Lichens of Soldiers Delight, on trunk of pine.
  537. Hypogymnia krogiae Ohlsson   [Parmeliaceae]
  538. Skorepa et al. (1977) – Garrett Co., on conifer bark.
  539. Skorepa et al. (1979) – on bark.
  540. Hypogymnia physodes (L.) Nyl.   [Parmeliaceae]
  541. Skorepa et al. (1977) – Garrett Co., on tree trunks.
  542. Skorepa et al. (1979) – on bark, acidic rock.
  543. E.C. Uebel Herbarium – Baltimore Co., on bark of Norway Maple.
  544. Hypotrachyna livida (Taylor) Hale   [Parmeliaceae]
  545. Syn.: Parmelia livida Taylor
  546. Skorepa et al. (1977) – Sommerset Co., on branches of deciduous trees.
  547. Skorepa et al. (1979) – on bark.
  548. Biechele (2002) – lower eastern shore of Maryland.
  549. E.G. Worthley Herbarium - Wicomico Co.; Worcester Co., Milburn Landing, on branches.
  550. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown), (6. Pocomoke)
  551. Hypotrachyna osseoalba (Vainio) Park & Hale   [Parmeliaceae]
  552. Syn.: Parmelia formosana Zahlbr.
  553. Skorepa et al. (1977) – Dorchester Co., on oak trunk.
  554. Skorepa et al. (1979) – on bark.
  555. Lendemer & Knapp (2007) - (4. Sharptown)
  556. Imshaugia aleurites (Ach.) S.F. Meyer   [Parmeliaceae]
  557. Syn.: Parmeliopsis aleurites (Ach.) Nyl.
  558. Skorepa et al. (1977) – Garrett Co., on oak trunk.
  559. Skorepa et al. (1979) – on bark, acidic rock, wood.
  560. E.G. Worthley Herbarium - Lichens of Soldiers Delight, on Virginia pines.
  561. E.C. Uebel Herbarium – Lichens of Soldiers Delight, on trunks of pines.
  562. Imshaugia placorodia (Ach.) S.F. Meyer   [Parmeliaceae]
  563. Syn.: Parmeliopsis placorodia (Ach.) Nyl.
  564. Skorepa et al. (1977) – Harford Co., on pine trees.
  565. Skorepa et al. (1979) – on bark.
  566. E.G. Worthley Herbarium - Lichens of Soldiers Delight, on pine branches.
  567. E.C. Uebel Herbarium – Lichens of Soldiers Delight, on branches of Virginia pines.
  568. Julella fallaciosa (Arnold) R.C. Harris   (Not lichenized.)   [Thelenellaceae]
  569. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on bark of Tulip Tree.
  570. Lasallia papulosa (Ach.) Llano   [Umbilicariaceae]
  571. Syn.: Umbilicaria papulosa (Ach.) Nyl.
  572. Skorepa et al. (1977) – Baltimore Co., on rocks on hillside.
  573. Skorepa et al. (1979) – on bark, acidic rock.
  574. E.G. Worthley Herbarium - Frederick Co., Cunningham Falls; Montgomery Co., Great Falls.
  575. Lasallia pensylvanica (Hoffm.) Llano   [Umbilicariaceae]
  576. Syn.: Umbilicaria pensylvanica Hoffm.
  577. Skorepa et al. (1977) – Harford Co., on rock outcrops.
  578. Skorepa et al. (1979) – on acidic rock.
  579. E.G. Worthley Herbarium - Washington Co., Wash. Monument State Park, on rocks.
  580. Lasallia pustulata (L.) Mérat   [Umbilicariaceae]
  581. E.G. Worthley Herbarium - Frederick Co., South Mt.; Montgomery Co., Sugarloaf Mt., on boulders.
  582. Lecanora albella (Pers.) Ach. var. albella   [Lecanoraceae]
  583. E.G. Worthley Herbarium - Worcester Co., on bark of Pinus taeda.
  584. Lecanora cadubriae (A. Massal.) Hedl.   [Lecanoraceae]
  585. Skorepa et al. (1979) – on bark.
  586. Lecanora caesiorubella Ach. subsp. caesiorubella   [Lecanoraceae]
  587. Skorepa et al. (1977) – Harford Co., on trunk of oak.
  588. Skorepa et al. (1979) – on bark.
  589. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Wicomico Co.
  590. Lecanora campestris (Schaerer) Hue   [Lecanoraceae]
  591. Skorepa et al. (1977) – Allegany Co., on shale outcrop.
  592. Skorepa et al. (1979) – on acidic rock.
  593. Lecanora chlarotera Nyl.   [Lecanoraceae]
  594. Skorepa et al. (1977) – Calvert Co., on trunks of deciduous trees.
  595. Skorepa et al. (1979) – on bark.
  596. Biechele (2002) – lower eastern shore of Maryland.
  597. Lecanora cinereofusca H. Magn.   [Lecanoraceae]
  598. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.), (6. Pocomoke)
  599. Lecanora dispersa (Pers.) Sommerf.   [Lecanoraceae]
  600. Skorepa et al. (1977) – Washington Co., on stone wall.
  601. Skorepa et al. (1979) – on calcareous rock, cement, other.
  602. E.G. Worthley Herbarium - Baltimore Co.; Washington Co., on rock outcrops.
  603. Lecanora expallens Ach.   [Lecanoraceae]
  604. Syn.: Lecanora conizea (Ach.) Nyl.
  605. Skorepa et al. (1977) – St. Mary's Co., on trunks of Black Locust.
  606. Skorepa et al. (1979) – on bark, wood.
  607. E.G. Worthley Herbarium - Lichens of Soldiers Delight; St. Mary' Co., on trunk of Black Locust.
  608. Lecanora hagenii (Ach.) Ach.   [Lecanoraceae]
  609. Skorepa et al. (1977) – Frederick Co., on old timbers.
  610. Skorepa et al. (1979) – on wood.
  611. Lecanora hybocarpa (Tuck.) Brodo   [Lecanoraceae]
  612. Biechele (2002) – lower eastern shore of Maryland.
  613. Lendemer & Knapp (2007) - (1. Millington), (4. Sharptown), (5. Hickory Pt.), (6. Pocomoke)
  614. Lecanora imshaugii Brodo   [Lecanoraceae]
  615. Biechele (2002) – lower eastern shore of Maryland.
  616. Lecanora minutella Nyl.   [Lecanoraceae]
  617. Lendemer & Knapp (2007) - (2. Idylwild)
  618. Lecanora muralis (Schreber) Rabenh.   [Lecanoraceae]
  619. Skorepa et al. (1977) – Montgomery Co., on rock ledges.
  620. Lecanora muralis var. versicolor (Pers.) Tuck.   [Lecanoraceae]
  621. Syn.: Lecanora versicolor (Pers.) Ach.
  622. Skorepa et al. (1977) – Washington Co., on stone wall.
  623. Skorepa et al. (1979) – on acidic rock.
  624. Skorepa et al. (1979) – on acidic rock, calcareous rock.
  625. E.G. Worthley Herbarium - Washington Co., C & 0 canal, on shale.
  626. Lecanora polytropa (Hoffm.) Rabenh.   [Lecanoraceae]
  627. Skorepa et al. (1979) – on acidic rock.
  628. Lecanora pulicaris (Pers.) Ach.   [Lecanoraceae]
  629. Syn.: Lecanora coilocarpa (Ach.) Nyl.
  630. Skorepa et al. (1977) – Calvert Co., on deciduous trees.
  631. Skorepa et al. (1979) – on bark.
  632. E.C. Uebel Herbarium – Baltimore Co., on bark of Norway Maple.
  633. Lecanora strobilina (Spreng.) Kieffer   [Lecanoraceae]
  634. Biechele (2002) – lower eastern shore of Maryland.
  635. E.C. Uebel Herbarium – Baltimore Co., on bark of Norway Maple; Prince George's Co., on bark of pines.
  636. Lendemer & Knapp (2007) - (2. Idylwild)
  637. Lecanora subpallens Zahlbr. -   [Lecanoraceae]
  638. Lendemer & Knapp (2007) - (1. Millington), (2. Idylwild), (4. Sharptown)
  639. Lecanora thysanophora R.C. Harris   [Lecanoraceae]
  640. Thomas E. Wilson, III (4 Dec 2006) – IMG_9960.JPG, photographed on tree trunk in woodland on eastern side of Baltimore County, MD.
  641. Lendemer & Knapp (2007) - (1. Millington), (5. Hickory Pt.)
  642. Lecanora xylophila Hue   [Lecanoraceae]
  643. Syn.: Lecanora laevis Poelt (N.A. records are L. xylophila)
  644. Skorepa et al. (1977) – Baltimore Co., on wave-washed timbers.
  645. Skorepa et al. (1979) – on wood.
  646. Lecidea cyrtidia Tuck.   [Lecideaceae]
  647. Skorepa et al. (1977) – Washington Co., on rocks.
  648. Skorepa et al. (1979) – on acidic rock.
  649. Lecidea plebeja Nyl.   [Lecideaceae]
  650. Syn.: Lecidea myriocarpoides Nyl.
  651. Skorepa et al. (1979) – on wood.
  652. Lendemer & Knapp (2007) - (2. Idylwild)
  653. Lecidella stigmatea (Ach.) Hertel & Leuckert   [Lecanoraceae]
  654. Syn.: Lecidea stigmatea Ach.
  655. Skorepa et al. (1979) – on acidic rock.
  656. Lepraria caesiella R.C. Harris   [Family Not Determined]
  657. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown)
  658. Lepraria aff. incana (L.) Ach.   [Family Not Determined]
  659. Lendemer & Knapp (2007) - (1. Millington), (2. Idylwild)
  660. Lepraria lobificans Nyl.   [Family Not Determined]
  661. Syn.: Lepraria finkii (B. de Lesd.) R.C. Harris
  662. E.G. Worthley Herbarium - Baltimore Co., Gunpowder River Area, on Quercus alba.
  663. E.C. Uebel Herbarium – Carroll Co., Liberty Reservoir, rock near water.
  664. Lendemer & Knapp (2007) - (2. Idylwild), (3. Chesapeake)
  665. Lepraria membranacea (Dickson) Vainio   [Family Not Determined]
  666. Syn.: Leproloma membranaceum (Dickson) Vainio
  667. E.G. Worthley Herbarium - Frederick Co., Cunningham Falls.
  668. Lepraria neglecta (Nyl.) Erichsen   [Family Not Determined]
  669. Syn.: Lepraria zonata Brodo = L.caesioalba or L. neglecta.
  670. Skorepa et al. (1977) – Baltimore Co., on acid rocks.
  671. Skorepa et al. (1979) – on bark, acidic rock.
  672. E.G. Worthley Herbarium - Frederick Co., Cunningham Falls; Montgomery Co., Great Falls.
  673. Leptogium azureum (Sw.) Mont.   [Collemataceae]
  674. Skorepa et al. (1977) – Montgomery Co., Plummers Is. (collected by Fink).
  675. Skorepa et al. (1979) – on acidic rock.
  676. Leptogium cyanescens (Rabenh.) Körber   [Collemataceae]
  677. Skorepa et al. (1977) – Worcester Co., on trunks of deciduous trees.
  678. Skorepa et al. (1979) – on bark, acidic rock.
  679. Biechele (2002) – lower eastern shore of Maryland.
  680. E.G. Worthley Herbarium - Baltimore Co., Gunpowder River, on vertical rocks; Frederick Co., Cunningham Falls.
  681. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  682. Leptogium lichenoides (L.) Zahlbr.   [Collemataceae]
  683. Skorepa et al. (1977) – Allegany Co., on bark of deciduous trees.
  684. Skorepa et al. (1979) – on bark, acidic rock.
  685. Leptogium phyllocarpum (Pers.) Mont.   [Collemataceae]
  686. Biechele (2002) – lower eastern shore of Maryland.
  687. Leptogium subtile (Schrader) Torss.   [Collemataceae]
  688. Syn.: Leptogium minutissimum (Flörke) Fr.
  689. Skorepa et al. (1977) – Montgomery Co., on rock ledge.
  690. Skorepa et al. (1979) – on acidic rock.
  691. Lichenoconium erodens M.S. Christ. & D. Hawksw.   [Anamorphic Ascomycetes]
  692. Lendemer & Knapp (2007) - (5. Hickory Pt.) (on Lecanora cinereofusca)
  693. Lichenodiplis lecanorae (Vouaux) Dyko & D. Hawksw.   [Anamorphic Ascomycetes]
  694. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, a specimen of Pertusaria xanthodes U-243, was collected growing on a small dead oak branch.   This crustose lichen contained a lichenicolous fungus and a sample of this fungus was sent to the Farlow Herbarium where it was forwarded to Dr. David Hawksworth, who identified it as Lichenodiplis lecanorae.
  695. Lobaria pulmonaria (L.) Hoffm.   [Lobariaceae]
  696. Skorepa et al. (1979) – on bark.
  697. Biechele (2002) – lower eastern shore of Maryland.
  698. E.G. Worthley Herbarium - Frederick Co., Cunningham Falls.
  699. Lobaria quercizans Michaux   [Lobariaceae]
  700. Skorepa et al. (1977) – Garrett Co., on trunk of deciduous tree.
  701. Skorepa et al. (1979) – on bark.
  702. Biechele (2002) – lower eastern shore of Maryland.
  703. E.G. Worthley Herbarium - Frederick Co., Cunningham Falls.
  704. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  705. Loxospora pustulata (Brodo & Culb.) R.C. Harris   [Loxosporaceae]
  706. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown)
  707. Melanelia culbersonii (Hale) Thell   [Parmeliaceae]
  708. Syn.: Cetraria culbersonii Hale
  709. Skorepa et al. (1977) – Allegany Co., on exposed rock.
  710. Skorepa et al. (1979) – on acidic rock.
  711. E.G. Worthley Herbarium - Allegany Co., Dans Rock Overlook.
  712. Melanelixia subaurifera (Nyl.) O. Blanco et al.   [Parmeliaceae]
  713. Syns.: Parmelia subaurifera Nyl., Melanelia subaurifera (Nyl.) Essl.
  714. Skorepa et al. (1977) – Allegany Co., on deciduous trees.
  715. Skorepa et al. (1979) – on bark.
  716. E.C. Uebel Herbarium – Baltimore Co., on bark of Norway Maple.
  717. Melanohalea exasperata (De Not.) O. Blanco et al..   [Parmeliaceae]
  718. Syns.: Parmelia exasperata De Not., Melanelia exasperata (De Not.) Essl.
  719. Skorepa et al. (1979) – on bark.
  720. E.G. Worthley Herbarium - Baltimore Co., Owings Mills.
  721. Metamelanea melambola (Tuck.) Henssen   [Lichinaceae]
  722. Syn.Pyrenopsis melambola (Tuck.) Tuck.
  723. Skorepa et al. (1979) – on calcareous rock.
  724. Micarea erratica (Körber) Hertel, Rambold & Pietschmann   [Micareaceae]
  725. Syn.: Lecidea erratica Körber
  726. Skorepa et al. (1977) – Baltimore Co., on pebbles.
  727. Skorepa et al. (1979) – on acidic rock.
  728. E.G. Worthley Herbarium - Garrett Co., Carey Run, in open field.
  729. Lendemer & Knapp (2007) - (2. Idylwild)
  730. Minutoexcipula mariana V. Atienza* (on Pertusaria)   [Family Not Determined]
  731. Lendemer & Knapp (2007) - (4. Sharptown)
  732. Mycobilimbia berengeriana (A. Massal.) Hafellner & V. Wirth   [Porpidiaceae]
  733. Syn.: Lecidea berengeriana (Massal.) Nyl.
  734. Skorepa et al. (1977) – Frederick Co., on oak trunks.
  735. Skorepa et al. (1979) – on bark.
  736. E.G. Worthley Herbarium - Montgomery Co., Great Falls, on old wood.
  737. Myelochroa aurulenta (Tuck.) Elix & Hale   [Parmeliaceae]
  738. Syns: Parmelia aurulenta Tuck.
  739. Skorepa et al. (1977) – Baltimore Co., on rocks.
  740. Skorepa et al. (1979) – on bark, acidic rock.
  741. E.G. Worthley Herbarium - Baltimore Co., along Gunpowder River, on rock outcrops.
  742. E.C. Uebel Herbarium – Baltimore County, Liberty Reservoir; Prince George's Co., on bark.
  743. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  744. Myelochroa galbina (Ach.) Elix & Hale   [Parmeliaceae]
  745. Syn.: Parmelia galbina Ach.
  746. Skorepa et al. (1977) – Allegany Co., on trunks of deciduous trees.
  747. Skorepa et al. (1979) – on bark.
  748. E.G. Worthley Herbarium - Allegany Co., along Terrapin Run, on trunks of deciduous trees.
  749. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  750. Myelochroa metarevoluta (Asah.) Elix & Hale   [Parmeliaceae]
  751. Syn.: Parmelia metarevoluta (Asahina) Hale
  752. Skorepa et al. (1977) – Montgomery Co., on oak trunk.
  753. Skorepa et al. (1979) – on bark.
  754. Myelochroa obsessa (Ach.) Elix & Hale   [Parmeliaceae]
  755. Syn.: Parmelia obsessa Ach.
  756. Skorepa et al. (1977) – Baltimore Co., on acid rocks.
  757. Skorepa et al. (1979) – on bark, acidic rock.
  758. E.G. Worthley Herbarium - Baltimore Co., near Little Gunpowder River, on rock ledges.
  759. Nadvornikia sorediata R.C. Harris   [Thelotremataceae]
  760. Lendemer & Knapp (2007) - (1. Millington), (5. Hickory Pt.), (6. Pocomoke)
  761. Nephroma helveticum Ach. subsp. helveticum   [Nephromataceae]
  762. Skorepa et al. (1977) – Montgomery Co., Plummers Is. (collected by Fink).
  763. Skorepa et al. (1979) – on acidic rock.
  764. Normandina pulchella (Borrer) Nyl.   [Verrucariaceae]
  765. Skorepa et al. (1979) – on bark.
  766. Ochrolechia androgyna (Hoffm.) Arnold   [Pertusariaceae]
  767. Skorepa et al. (1977) – Anne Arundel Co.
  768. Skorepa et al. (1979) – on acidic rock.
  769. Ochrolechia cinera Chev.   [Pertusariaceae]
  770. Biechele (2002) – lower eastern shore of Maryland.
  771. Ochrolechia pseudopallescens Brodo   [Pertusariaceae]
  772. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  773. Ochrolechia trochophora var. trochophora (Vainio) Oshio   [Pertusariaceae]
  774. Syn.: Ochrolechia rosella (Müll. Arg.) Vers.
  775. Biechele (2002) – lower eastern shore of Maryland.
  776. Ochrolechia yasudae Vainio   [Pertusariaceae]
  777. Skorepa et al. (1977) – Frederick Co. (collected by Plitt).
  778. Skorepa et al. (1979) – on acidic rock.
  779. Opegrapha varia Pers.   [Roccellaceae]
  780. Lendemer & Knapp (2007) - (6. Pocomoke)
  781. Opegrapha viridis Pers.   [Roccellaceae]
  782. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  783. Opegrapha vulgata Ach.   [Roccellaceae]
  784. Lendemer & Knapp (2007) - (2. Idylwild), (3. Chesapeake), (4. Sharptown)
  785. Pannaria conoplea (Ach.) Bory   [Pannariaceae]
  786. Syn.: Pannaria pityrea auct.
  787. Skorepa et al. (1979) – on bark.
  788. Pannaria lurida (Mont.) Nyl.   [Pannariaceae]
  789. Skorepa et al. (1979) – on bark.
  790. Biechele (2002) – lower eastern shore of Maryland.
  791. Parmelia saxatilis (L.) Ach.   [Parmeliaceae]
  792. Skorepa et al. (1977) – Frederick Co., in mature oak woods.
  793. Skorepa et al. (1979) – on bark, acidic rock.
  794. E.G. Worthley Herbarium - Baltimore Co., along Gunpowder River, on bark of Quercus velutina.
  795. Parmelia squarrosa Hale   [Parmeliaceae]
  796. Skorepa et al. (1977) – Garrett Co., on Acer.
  797. Skorepa et al. (1979) – on bark.
  798. Lendemer & Knapp (2007) - (6. Pocomoke)
  799. Parmelia sulcata Taylor   [Parmeliaceae]
  800. Skorepa et al. (1977) – Washington Co., on deciduous trees.
  801. Skorepa et al. (1979) – on bark, acidic rock.
  802. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Carroll Co., on bark of Fraxinus americana.
  803. E.C. Uebel Herbarium – Baltimore Co., on bark of Norway Maple.
  804. Parmelinopsis horrescens (Taylor) Elix & Hale   [Parmeliaceae]
  805. Syn.: Parmelia horrescens Taylor
  806. Skorepa et al. (1977) – Calvert Co., on trunks of pines.
  807. Skorepa et al. (1979) – on bark.
  808. E.G. Worthley Herbarium - Worcester Co., Milburn Landing, on bark of Pinus taeda.
  809. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown), (6. Pocomoke)
  810. Parmelinopsis minarum (Vainio) Elix & Hale   [Parmeliaceae]
  811. Syn.: Parmelia dissecta Nyl.
  812. Skorepa et al. (1977) – Frederick Co., on oak trunk.
  813. Skorepa et al. (1979) – on bark, acidic rock.
  814. E.G. Worthley Herbarium - Lichens of Soldiers Delight.
  815. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.)
  816. Parmeliopsis ambigua (Wulfen) Nyl.   [Parmeliaceae]
  817. Skorepa et al. (1977) – Garrett Co., on trunk of deciduous tree.
  818. Skorepa et al. (1979) – on bark.
  819. E.G. Worthley Herbarium - Worcester Co., Milburn Landing, on bark of Pinus taeda.
  820. Parmeliopsis hyperopta (Ach.) Arnold   [Parmeliaceae]
  821. Syn.: Parmeliopsis diffusa (Weber) Riddle
  822. E.G. Worthley Herbarium - Baltimore Co., Owings Mills.
  823. Parmeliopsis subambigua Gyelnik   [Parmeliaceae]
  824. Syn.: Parmeliopsis halei (Tuck.) Hale
  825. Skorepa et al. (1977) – Worcester Co., on pine trunks.
  826. Skorepa et al. (1979) – on bark.
  827. Lendemer & Knapp (2007) - (4. Sharptown), (6. Pocomoke)
  828. Parmotrema cetratum (Ach.) Hale   [Parmeliaceae]
  829. Syns.: Parmelia cetrata Ach, Rimelia cetrata (Ach.) Hale & Fletcher
  830. Skorepa et al. (1977) – Worcester Co., on trunk of Sweet gum.
  831. Skorepa et al. (1979) – on bark.
  832. Parmotrema chinense (Osbeck) Hale & Ahti   [Parmeliaceae]
  833. Syn.: Parmotrema perlatum (Huds.) Choisy
  834. E.C. Uebel Herbarium – Baltimore Co., on bark of Norway Maple, on oak limb.
  835. Parmotrema crinitum (Ach.) M. Choisy   [Parmeliaceae]
  836. Syn.: Parmelia crinita Ach.
  837. Skorepa et al. (1977) – Worcester Co., on trunk of pine.
  838. Skorepa et al. (1979) – on bark.
  839. E.G. Worthley Herbarium - Baltimore Co., Owings Mills, on trees.
  840. Parmotrema dilatatum (Vainio) Hale   [Parmeliaceae]
  841. Syn.: Parmelia dilatata Vainio
  842. Skorepa et al. (1977) – Dorchester Co., on trunks of deciduous trees.
  843. Skorepa et al. (1979) – on bark.
  844. Parmotrema eurysacum (Hue) Hale   [Parmeliaceae]
  845. Syn.: Parmelia eurysaca Hue
  846. Skorepa et al. (1977) – Baltimore Co. (collected by Plitt).
  847. Skorepa et al. (1979) – on bark.
  848. Parmotrema gardneri (Dodge) Serux.   [Parmeliaceae]
  849. Biechele (2002) – lower eastern shore of Maryland.
  850. Parmotrema hypoleucinum (B. Stein) Hale   [Parmeliaceae]
  851. Biechele (2002) – lower eastern shore of Maryland.
  852. Parmotrema hypoleucinum (J. Steiner) Hale   [Parmeliaceae]
  853. Lendemer & Knapp (2007) - (4. Sharptown), (6. Pocomoke)
  854. Parmotrema hypotropum (Nyl.) Hale   [Parmeliaceae]
  855. Syn.: Parmelia hypotropa Nyl.
  856. Skorepa et al. (1977) – Kent Co., on trees.
  857. Skorepa et al. (1979) – on bark.
  858. Biechele (2002) – lower eastern shore of Maryland.
  859. E.G. Worthley Herbarium - Kent Co., on trees; Somerset Co., on deciduous trees; Wicomico Co.; Worcester Co., on bark of Pinus taeda.
  860. E.C. Uebel Herbarium – Baltimore Co.; Prince George's Co., on bark and boulder.
  861. Lendemer & Knapp (2007) - (1. Millington), (2. Idylwild), (4. Sharptown), (6. Pocomoke)
  862. Parmotrema margaritatum (Hue) Hale   [Parmeliaceae]
  863. Syn.: Parmelia margaritata Hue
  864. Skorepa et al. (1979) – on bark.
  865. Parmotrema perforatum (Jacq.) A. Massal.   [Parmeliaceae]
  866. Syn.: Parmelia perforata (Jacq.) Ach.
  867. Skorepa et al. (1977) – Charles Co., on deciduous trees.
  868. Skorepa et al. (1979) – on bark.
  869. Biechele (2002) – lower eastern shore of Maryland.
  870. E.G. Worthley Herbarium - Prince George's Co., on bark of oak; Worcester Co., Milburn Landing.
  871. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  872. Parmotrema reticulatum (Taylor) M. Choisy   [Parmeliaceae]
  873. Syns.: Parmelia reticulata Taylor, Rimelia reticulata (Taylor) Hale & Fletcher
  874. Skorepa et al. (1977) – Charles Co., on deciduous trees.
  875. Skorepa et al. (1979) – on bark.
  876. Biechele (2002) – lower eastern shore of Maryland.
  877. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Worcester Co., on bark of Taxodium and Acer rubrum.
  878. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  879. Parmotrema stuppeum (Taylor) Hale   [Parmeliaceae]
  880. Syn.: Parmelia stuppea Taylor
  881. Skorepa et al. (1977) – Garrett Co., on trunk of oak.
  882. Skorepa et al. (1979) – on bark.
  883. E.C. Uebel Herbarium – Baltimore Co., on bark of Norway Maple.
  884. Parmotrema subisidiosum (Müll. Arg.) Hale
  885. Biechele (2002) – lower eastern shore of Maryland.
  886. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.), (6. Pocomoke)
  887. Parmotrema submarginale (Michx.) DePriest & Hale   [Parmeliaceae]
  888. Syn.: Parmelia michauxiana Zahlbr.
  889. Skorepa et al. (1977) – Charles Co., on deciduous trees.
  890. Skorepa et al. (1979) – on bark.
  891. E.G. Worthley Herbarium - Calvert Co., Battle Creek Cypress Swamp, on bark; Worcester Co., Milburn Landing, on deciduous trees.
  892. Lendemer & Knapp (2007) - (4. Sharptown), (5. Hickory Pt.), (6. Pocomoke)
  893. Parmotrema subtinctorium (Zahlbr.) Hale   [Parmeliaceae]
  894. Syn.: Parmelia subcrinita Nyl.
  895. Skorepa et al. (1977) – Somerset Co., on deciduous trees.
  896. Skorepa et al. (1979) – on bark.
  897. Parmotrema xanthinum (Müll. Arg.) Hale   [Parmeliaceae]
  898. Syn.: Parmelia xanthina (Müll. Arg.) Vainio
  899. Skorepa et al. (1979) – on bark.
  900. Biechele (2002) – lower eastern shore of Maryland.
  901. Lendemer & Knapp (2007) - (6. Pocomoke)
  902. Peltigera aphthosa (L.) Willd.   [Peltigeraceae]
  903. Skorepa et al. (1977) – No County, (Thomson, 1940).
  904. Peltigera canina (L.) Willd.   [Peltigeraceae]
  905. Skorepa et al. (1977) – Garrett Co., with moss on sandstone.
  906. E.G. Worthley Herbarium - Garrett Co., Casselman Bridge State Park, on sandstone rocks; Wicomico Co., on sandy soil.
  907. Peltigera didactyla (With.) J. R. Laundon   [Peltigeraceae]
  908. Syn.: Peltigera spuria (Ach.) DC.
  909. Skorepa et al. (1977) – Washington Co., on rock in seepage area.
  910. Peltigera elisabethae Gyelnik   [Peltigeraceae]
  911. Skorepa et al. (1977) – Baltimore Co., with moss on wet rocks.
  912. Peltigera evansiana Gyelnik   [Peltigeraceae]
  913. Skorepa et al. (1977) – Baltimore Co., (collected by Plitt).
  914. Peltigera horizontalis (Hudson) Baumg.   [Peltigeraceae]
  915. Skorepa et al. (1977) – Baltimore Co., (collected by Merrill 1906).
  916. Peltigera neckeri Müll. Arg.   [Peltigeraceae]
  917. Biechele (2002) – lower eastern shore of Maryland.
  918. Peltigera polydactylon (Necker) Hoffm.   [Peltigeraceae]
  919. Skorepa et al. (1977) – Garrett Co., on moss covered rocks.
  920. Peltigera praetextata (Flörke ex Sommerf.) Zopf   [Peltigeraceae]
  921. Skorepa et al. (1977) – Dorchester Co., at base of tree.
  922. Biechele (2002) – lower eastern shore of Maryland.
  923. Lendemer & Knapp (2007) - (3. Chesapeake)
  924. Peltigera rufescens (Weiss) Humb.   [Peltigeraceae]
  925. Biechele (2002) – lower eastern shore of Maryland.
  926. Peltula euploca (Ach.) Poelt   [Peltulaceae]
  927. Skorepa et al. (1979) – on soil.
  928. Pertusaria amara (Ach.) Nyl.   [Pertusariaceae]
  929. Skorepa et al. (1979) – on bark.
  930. Pertusaria epixantha R.C. Harris   [Pertusariaceae]
  931. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  932. Pertusaria globularis (Ach.) Tuck.   [Pertusariaceae]
  933. Skorepa et al. (1979) – on other.
  934. Pertusaria hypothamnolica Dibben   [Pertusariaceae]
  935. Skorepa et al. (1979) – on bark.
  936. Pertusaria macounii (Lamb) Dibben   [Pertusariaceae]
  937. Skorepa et al. (1979) – on bark.
  938. Pertusaria multipunctoides Dibben   [Pertusariaceae]
  939. Skorepa et al. (1979) – on bark.
  940. Biechele (2002) – lower eastern shore of Maryland.
  941. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on trunk of Carya.
  942. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  943. Pertusaria ophthalmiza (Nyl.) Nyl.   [Pertusariaceae]
  944. Biechele (2002) – lower eastern shore of Maryland.
  945. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  946. Pertusaria paratuberculifera Dibben   [Pertusariaceae]
  947. Pertusaria tuberculifera Nyl is misidentification for N.A., most specimens are P. paratuberculifera.
  948. Skorepa et al. (1977) – Frederick Co., on oak trunks.
  949. Skorepa et al. (1979) – on bark.
  950. Lendemer & Knapp (2007) - (1. Millington), (2. Idylwild), (5. Hickory Pt.), (6. Pocomoke)
  951. Pertusaria plittiana Erichsen   [Pertusariaceae]
  952. Skorepa et al. (1979) – on acidic rock.
  953. Pertusaria propinqua Müll. Arg.   [Pertusariaceae]
  954. Skorepa et al. (1979) – on bark.
  955. Lendemer & Knapp (2007) - (6. Pocomoke)
  956. Pertusaria pustulata (Ach.) Duby   [Pertusariaceae]
  957. Skorepa et al. (1979) – on bark.
  958. E.C. Uebel Herbarium – Prince George's Co., on dead limb of deciduous tree.
  959. Lendemer & Knapp (2007) - (1. Millington)
  960. Pertusaria rubefacta Erichsen   [Pertusariaceae]
  961. Skorepa et al. (1979) – on bark.
  962. Pertusaria subpertusa Brodo   [Pertusariaceae]
  963. Skorepa et al. (1979) – on bark.
  964. Lendemer & Knapp (2007) - (2. Idylwild), (6. Pocomoke)
  965. Pertusaria tetrathalamia (Fée) Nyl.   [Pertusariaceae]
  966. Skorepa et al. (1979) – on bark.
  967. Pertusaria texana Müll. Arg.   [Pertusariaceae]
  968. Skorepa et al. (1979) – on bark.
  969. Lendemer & Knapp (2007) - (2. Idylwild)
  970. Pertusaria trachythallina Erichsen   [Pertusariaceae]
  971. Skorepa et al. (1979) – on bark.
  972. Pertusaria velata (Turner) Nyl.   [Pertusariaceae]
  973. Skorepa et al. (1977) – Frederick Co., in oak woods.
  974. Skorepa et al. (1979) – on bark.
  975. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.), (6. Pocomoke)
  976. Pertusaria waghornei Hulting   [Pertusariaceae]
  977. Skorepa et al. (1979) – on bark.
  978. Pertusaria xanthodes Müll. Arg.   [Pertusariaceae]
  979. Skorepa et al. (1977) – Harford Co., on tree bark.
  980. Skorepa et al. (1979) – on bark.
  981. E.G. Worthley Herbarium - Calvert Co.; Frederick Co.; Washington Co., on bark of Quercus velutina.
  982. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on bark of dead oak branch.
  983. Phaeocalicium curtisii (Tuck.) Tibell   [Mycocaliciaceae]
  984. E.G. Worthley Herbarium - Baltimore Co., on twigs of Rhus glabra.
  985. Phaeocalicium polyporaeum (Nyl.) Tibell   [Mycocaliciaceae]
  986. 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.
  987. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown), (6. Pocomoke)
  988. Phaeographis inusta (Ach.) Müll. Arg.   [Graphidaceae]
  989. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown)
  990. Phaeophyscia adiastola (Essl.) Essl.   [Physciaceae]
  991. Syns.: Physcia orbicularis (Necker) Poetsch; Phaeophyscia orbicularis (Necker) Moberg
  992. Skorepa et al. (1977) – Allegany Co., on oak trunk.
  993. Skorepa et al. (1979) – on bark, acidic rock, other.
  994. E.G. Worthley Herbarium – Worcester Co., on bark of Taxodium; Frederick Co., Cunningham Falls; Baltimore Co., Church of the Brethren.
  995. Phaeophysica ciliata (Hoffm.) Moberg   [Physciaceae]
  996. Syn.: Physcia ciliata (Hoffm.) Du Rietz
  997. Skorepa et al. (1977) – Caroline Co., on cement bridge.
  998. Skorepa et al. (1979) – on bark.
  999. Phaeophyscia hirsuta (Mereschk.) Essl.   [Physciaceae]
  1000. Syns.: Physcia hirsuta Mereschk., Phaeophyscia cernohorskyi (Nádv.) Essl.
  1001. Skorepa et al. (1979) – on cement.
  1002. Phaeophyscia hirtella Essl.   [Physciaceae]
  1003. Skorepa et al. (1979) – on bark.
  1004. Phaeophyscia hispidula (Ach.) Essl.   [Physciaceae]
  1005. Syn.: Phaeophyscia imbricata Vainio
  1006. Skorepa et al. (1979) – on bark.
  1007. Phaeophyscia pusilloides (Zahlbr.) Essl.   [Physciaceae]
  1008. Syn.: Physcia pusilloides Zahlbr.
  1009. Skorepa et al. (1977) – Frederick Co., on trees.
  1010. Skorepa et al. (1979) – on bark.
  1011. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Baltimore Co., on bark of Norway Maple;
  1012. Phaeophyscia rubropulchra (Degel.) Essl.   [Physciaceae]
  1013. Syn.: Physcia orbicularis f. rubropulchra Degel.
  1014. Skorepa et al. (1977) – Garrett Co., in upland woods.
  1015. Skorepa et al. (1979) – on bark, acidic rock, other.
  1016. Biechele (2002) – lower eastern shore of Maryland.
  1017. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Baltimore Co., Liberty Reservoir, on trunk of Tulip tree.
  1018. Lendemer & Knapp (2007) - (1. Millington), (2. Idylwild)
  1019. Phlyctis ludoviciensis (Müll. Arg.) Lendemer   [Phlyctidaceae]
  1020. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  1021. Physcia adscendens (Fr.) H. Olivier   [Physciaceae]
  1022. Skorepa et al. (1977) – Allegany Co., on deciduous trees.
  1023. Skorepa et al. (1979) – on bark, calcareous rock.
  1024. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Baltimore Co., St. Thomas Cemetery, on gravestone.
  1025. Physcia aipolia (Ehrh. ex Humb.) Fürnr. var. aipolia   [Physciaceae]
  1026. Skorepa et al. (1977) – Worcester Co., on deciduous trees.
  1027. Skorepa et al. (1979) – on bark.
  1028. Biechele (2002) – lower eastern shore of Maryland.
  1029. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Frederick Co., Cunningham Falls.
  1030. E.C. Uebel Herbarium – Carroll Co., Liberty Reservoir, on bark; Baltimore Co., on Norway Maple.
  1031. Physcia americana G. Merr.   [Physciaceae]
  1032. Syn.: Physcia tribacoides Nyl.
  1033. Skorepa et al. (1977) – Worcester Co., on deciduous trees.
  1034. Skorepa et al. (1979) – on bark, acidic rock, calcareous rock.
  1035. E.G. Worthley Herbarium - Baltimore Co., Grace Methodist Church, Gunpowder River, on Tulip Tree; Frederick Co., Cunningham Falls.
  1036. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.)
  1037. Physcia millegrana Degel.   [Physciaceae]
  1038. Skorepa et al. (1977) – Garrett Co., on oak.
  1039. Skorepa et al. (1979) – on bark, acidic rock.
  1040. Biechele (2002) – lower eastern shore of Maryland.
  1041. E.G. Worthley Herbarium - Calvert Co.; Wicomico Co.; Carroll Co., Falls Realty Company, on cement steps.
  1042. E.C. Uebel Herbarium – Prince Georges Co., on dead limb; Carroll Co., Liberty Reservoir, on bark.
  1043. Lendemer & Knapp (2007) - (2. Idylwild)
  1044. Physcia phaea (Tuck.) J.W. Thomson   [Physciaceae]
  1045. Skorepa et al. (1977) – Baltimore Co., (collected by Plitt 1909)
  1046. Skorepa et al. (1979) – on acidic rock.
  1047. Physcia pseudospeciosa J.W. Thomson   [Physciaceae]
  1048. Skorepa et al. (1977) – Baltimore Co., on acid rocks.
  1049. Skorepa et al. (1979) – on acidic rock.
  1050. E.G. Worthley Herbarium - Baltimore Co., near Gunpowder River, on vertical acidic rocks.
  1051. Physcia pumilior R.C. Harris   [Physciaceae]
  1052. Lendemer & Knapp (2007) - (2. Idylwild)
  1053. Physcia stellaris (L.) Nyl.   [Physciaceae]
  1054. Skorepa et al. (1977) – Baltimore Co., on oak.
  1055. Skorepa et al. (1979) – on bark.
  1056. Biechele (2002) – lower eastern shore of Maryland.
  1057. E.C. Uebel Herbarium – Baltimore Co., on bark of Norway Maple; Prince George's Co., on bark.
  1058. Physcia subtilis Degel.   [Physciaceae]
  1059. Skorepa et al. (1977) – Montgomery Co., on rock ledges.
  1060. Skorepa et al. (1979) – on acidic rock.
  1061. E.G. Worthley Herbarium - Frederick Co., Cunningham Falls.
  1062. Physciella chloantha (Ach.) Essl.   [Physciaceae]
  1063. Syn.: Physcia luganensis Mereschk.
  1064. Skorepa et al. (1977) – Queen Anne's Co., on cement bridge.
  1065. Skorepa et al. (1979) – on bark, cement.
  1066. E.C. Uebel Herbarium – Prince George's Co., along bike path, on concrete; on tree branch.
  1067. Physconia detersa (Nyl.) Poelt   [Physciaceae]
  1068. Skorepa et al. (1979) – on bark, calcareous rock, cement.
  1069. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Baltimore Co., Green Spring Valley, on brick wall; on old cement bridge.
  1070. Placidium arboreum (Schwein. ex Michener) Lendemer   [Verrucariaceae]
  1071. Syn.: Dermatocarpon tuckermanii (Rav.) Zahlbr.; Placidium tuckermanii (Ravenel ex Mont.) Breuss
  1072. Skorepa et al. (1977) – Allegany Co., base of White Oak.
  1073. Skorepa et al. (1979) – on bark.
  1074. E.G. Worthley Herbarium - Allegany Co., Green Ridge State Forest, on base of White Oak.
  1075. Placidium lachneum (Ach.) Breuss   [Verrucariaceae]
  1076. E.G. Worthley Herbarium - Lichens of Soldiers Delight.
  1077. Placynthiella uliginosa (Schrader) Coppins & P. James   [Agyriaceae]
  1078. Syn.: Lecidea uliginosa (Schrad.) Ach.
  1079. Skorepa et al. (1977) – Dorchester Co., on oak trunk.
  1080. Skorepa et al. (1979) – on bark.
  1081. Biechele (2002) – lower eastern shore of Maryland.
  1082. Lendemer & Knapp (2007) - (2. Idylwild)
  1083. Placynthium nigrum (Hudson) Gray   [Placynthiaceae]
  1084. Skorepa et al. (1977) – Garrett Co., on block of cement.
  1085. Skorepa et al. (1979) – on calcareous rock, cement.
  1086. E.G. Worthley Herbarium - Baltimore Co., St. Thomas Church Cemetery, on rock wall.
  1087. Platismatia tuckermanii (Oakes) Culb. & C. Culb.   [Parmeliaceae]
  1088. Skorepa et al. (1977) – Garrett Co., on sandstone boulder.
  1089. Skorepa et al. (1979) – on bark, acidic rock, wood
  1090. Polysporina simplex (Davies) Vezda   [Acarosporaceae]
  1091. Syn.: Sarcogyne simplex (Davies) Nyl.
  1092. Skorepa et al. (1979) – on acidic rock.
  1093. E.G. Worthley Herbarium - Howard Co., on rock outcrop.
  1094. Porina cestrensis (Tuck. ex Michener) Müll. Arg.   [Trichotheliaceae]
  1095. Skorepa et al. (1979) – on bark.
  1096. Porina heterospora (Fink ex J. Hedrick) R.C. Harris [Trichotheliaceae]
  1097. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  1098. Porpidia albocaerulescens (Wulfen) Hertel & Knoph   [Porpidiaceae]
  1099. Syn.: Lecanora albocaerulescens (Wulf.) Ach.
  1100. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  1101. Skorepa et al. (1979) – on acidic rock.
  1102. E.G. Worthley Herbarium - Baltimore Co., near small bridge, on Wissahickon schist; Frederick Co.; Garrett Co., on rocks along Big Run.
  1103. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on sandstone boulder.
  1104. Porpidia crustulata? (Ach.) Hertel & Knoph   [Porpidiaceae]
  1105. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  1106. Porpidia macrocarpa (DC.) Hertel & A. J. Schwab   [Porpidiaceae]
  1107. Syn.: Lecidea macrocarpa (DC.) Steud.
  1108. Skorepa et al. (1977) – Garrett Co., on sandstone.
  1109. Skorepa et al. (1979) – on acidic rock.
  1110. Protoblastenia rupestris (Scop.) J. Steiner   [Psoraceae]
  1111. Skorepa et al. (1979) – on calcareous rock, cement.
  1112. Pseudevernia consocians (Vainio) Hale & Culb.   [Parmeliaceae]
  1113. Syn.: Parmelia furfuracea (L.) Ach.
  1114. Skorepa et al. (1977) – Garrett Co., on upper branches of Hemlock.
  1115. Skorepa et al. (1979) – on bark.
  1116. E.G. Worthley Herbarium - Baltimore Co., Owings Mills.
  1117. Pseudosagedia cestrensis (Tuck. ex E. Michener) R.C. Harris   [Porinaceae]
  1118. Lendemer & Knapp (2007) - (2. Idylwild)
  1119. Pseudosagedia raphidosperma (Müll. Arg.) R.C. Harris   [Porinaceae]
  1120. Lendemer & Knapp (2007) - (4. Sharptown)
  1121. Psora decipiens (Hedwig) Hoffm.   [Psoraceae]
  1122. Syn.: Lecidea decipiens (Hedwig) Ach.
  1123. Skorepa et al. (1979) – on soil.
  1124. Psora russellii (Tuck.) A. Schneider   [Psoraceae]
  1125. Syn.: Lecidea russellii Tuck.
  1126. Skorepa et al. (1977) – Frederick Co., on conglomerate boulders.
  1127. Skorepa et al. (1979) – on calcareous rock.
  1128. Psorotichia schaereri (A. Massal.) Arnold   [Lichinaceae]
  1129. Skorepa et al. (1979) – on cement.
  1130. Psorula rufonigra (Tuck.) Gotth. Schneider   [Psoraceae]
  1131. Syn.: Lecidea rufonigra (Tuck.) Nyl.
  1132. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  1133. Skorepa et al. (1979) – on acidic rock.
  1134. Punctelia appalachensis (Culb.) Krog   [Parmeliaceae]
  1135. Syn.: Parmelia appalachensis Culb.
  1136. Skorepa et al. (1979) – on bark.
  1137. Punctelia bolliana (Müll. Arg.) Krog   [Parmeliaceae]
  1138. Syn.: Parmelia bolliana Müll. Arg.
  1139. Skorepa et al. (1979) – on bark.
  1140. Punctelia borreri (Sm.) Krog   [Parmeliaceae]
  1141. Syn.: Parmelia borreri (Sm.) Turner
  1142. Skorepa et al. (1979) – on bark.
  1143. Punctelia missouriensis G. Wilh. & Ladd
  1144. Lendemer & Knapp (2007) - (2. Idylwild)
  1145. Punctelia perreticulata (Räsänen) G. Wilh. & Ladd   [Parmeliacae]
  1146. Syns.: Punctelia subrudecta (Nyl.) Krog, Parmelia subrudecta Nyl.
  1147. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  1148. Skorepa et al. (1979) – on bark, acidic rock.
  1149. Biechele (2002) – lower eastern shore of Maryland.
  1150. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Baltimore Co., Owings Mills, on bark.
  1151. E.C. Uebel Herbarium – Lichens of Soldiers Delight; Baltimore Co., on bark of Norway Maple.
  1152. Lendemer & Knapp (2007) - (4. Sharptown)
  1153. Punctelia rudecta (Ach.) Krog   [Parmeliaceae]
  1154. Syn.: Parmelia rudecta Ach.
  1155. Skorepa et al. (1977) – Caroline Co., on trunks of trees.
  1156. Skorepa et al. (1979) – on bark, acidic rock.
  1157. Biechele (2002) – lower eastern shore of Maryland.
  1158. 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.
  1159. E.C. Uebel Herbarium – Prince George's Co., on dead limb; Carroll Co., Liberty Reservoir, on bark.
  1160. Lendemer & Knapp (2007) - (1. Millington), (5. Hickory Pt.), (6. Pocomoke)
  1161. Pycnothelia papillaria Dufour   [Cladoniaceae]
  1162. Skorepa et al. (1977) – Prince George's Co., along dirt road.
  1163. Skorepa et al. (1979) – on soil.
  1164. Biechele (2002) – lower eastern shore of Maryland.
  1165. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  1166. Pyrenula pseudobufonia (Rehm) R.C. Harris   [Pyrenulaceae]
  1167. Syn.: Pyrenula neglecta R.C. Harris
  1168. Skorepa et al. (1979) – on bark.
  1169. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.)
  1170. Pyrenula punctella Trevis.   [Pyrenulaceae]
  1171. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  1172. Pyrenula subelliptica (Tuck.) R.C. Harris   [Pyrenulaceae]
  1173. Syn.: Pyrenula imperfecta (Ellis & Everh.) R.C. Harris
  1174. Skorepa et al. (1979) – on bark.
  1175. Pyrrhospora varians (Ach.) R.C. Harris   [Lecanoraceae]
  1176. Syn.: Lecidea varians Ach.
  1177. Skorepa et al. (1977) – Worcester Co., on twigs of Myrica.
  1178. Skorepa et al. (1979) – on bark.
  1179. Lendemer & Knapp (2007) - (2. Idylwild), (5. Hickory Pt.), (6. Pocomoke)
  1180. Pyxine caesiopruinosa (Tuck.) Imshaug   [Physciaceae]
  1181. Skorepa et al. (1977) – Howard Co., on tree.
  1182. Skorepa et al. (1979) – on bark.
  1183. E.G. Worthley Herbarium - Baltimore Co., on bark of Juglans nigra; Carroll Co., on bark of Juglans nigra.
  1184. Pyxine sorediata (Ach.) Mont.   [Physciaceae]
  1185. Skorepa et al. (1977) – Garrett Co., on oak.
  1186. Skorepa et al. (1979) – on bark.
  1187. Biechele (2002) – lower eastern shore of Maryland.
  1188. E.G. Worthley Herbarium – Frederick Co.; Baltimore Co., growing on a sterile crust, Pertusaria?
  1189. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on tree root; Ridge Road, on bark Norway Maple.
  1190. Lendemer & Knapp (2007) - (1. Millington), (2. Idylwild), (4. Sharptown)
  1191. Pyxine subcinerea Stirton   [Physciaceae]
  1192. E.C. Uebel Herbarium – Prince George's Co., on oak bark; Baltimore Co., on maple bark.
  1193. Ramalina americana? Hale   [Ramalinaceae]
  1194. Biechele (2002) – lower eastern shore of Maryland.
  1195. Ramalina fastigiata (Pers.) Ach.   [Ramalinaceae]
  1196. Skorepa et al. (1977) – Worcester Co., on branches of deciduous trees.
  1197. Skorepa et al. (1979) – on bark.
  1198. Ramalina willeyi R. Howe   [Ramalinaceae]
  1199. Skorepa et al. (1977) – Worcester Co., on branches of deciduous trees.
  1200. Biechele (2002) – lower eastern shore of Maryland.
  1201. Ramonia microspora Vězda   [Gyalectaceae]
  1202. Lendemer & Knapp (2007) - (2. Idylwild)
  1203. Rhizocarpon concentricum (Davies) Beltr.   [Rhizocarpaceae]
  1204. E.G. Worthley Herbarium - Garrett Co., Swallow Falls State Forest, on sandstone.
  1205. Rhizocarpon eupetraeum (Nyl.) Arnold   [Rhizocarpaceae]
  1206. Syn.: Rhizocarpon intermedium Degel.
  1207. Skorepa et al. (1979) – on acidic rock.
  1208. Rhizocarpon geographicum (L.) DC.   [Rhizocarpaceae]
  1209. Skorepa et al. (1979) – on acidic rock.
  1210. Rhizocarpon obscuratum (Ach.) A. Massal.   [Rhizocarpaceae]
  1211. Skorepa et al. (1977) – Baltimore Co., on rock outcrop.
  1212. Skorepa et al. (1979) – on acidic rock.
  1213. Rhizoplaca chrysoleuca (Sm.) Zopf   [Lecanoraceae]
  1214. Syn.: Lecanora rubina (Vill.) Ach.; Lecanora chrysoleuca (Sm.) Ach.
  1215. Skorepa et al. (1977) – Montgomery Co., on rock ledges.
  1216. Skorepa et al. (1979) – on acidic rock.
  1217. E.G. Worthley Herbarium - Frederick Co., Mt. Catoctin Park; Montgomery Co., Great Falls, on rocks.
  1218. Rimelia subisidiosa (Müll. Arg.) Hale & Fletcher   [Parmeliaceae]
  1219. Syn.: Parmelia subisidiosa (Müll. Arg.) C.W. Dodge
  1220. Skorepa et al. (1979) – on bark.
  1221. Rinodina applanata H. Magn.   [Physciaceae]
  1222. Skorepa et al. (1979) – on bark.
  1223. Rinodina ascociscana Tuck.   [Physciaceae]
  1224. Skorepa et al. (1979) – on bark.
  1225. Rinodina exigua (Ach.) Gray   [Physciaceae]
  1226. Skorepa et al. (1979) – on bark.
  1227. Rinodina ochrocea Willey ex Fink   [Physciaceae]
  1228. Skorepa et al. (1979) – on acidic rock.
  1229. Rinodina oxydata (A. Massal.) A. Massal.   [Physciaceae]
  1230. Skorepa et al. (1979) – on acidic rock.
  1231. Rinodina papillata H. Magn.   [Physciaceae]
  1232. Skorepa et al. (1979) – on bark.
  1233. Rinodina subminutaH. Magn.   [Physciaceae]
  1234. Skorepa et al. (1979) – on bark.
  1235. Sarcogyne clavus (DC.) Kremp.   [Acarosporaceae]
  1236. Skorepa et al. (1979) – on acidic rock.
  1237. Sarcogyne regularis Körber   [Acarosporaceae]
  1238. Skorepa et al. (1979) – on calcareous rock.
  1239. E.C. Uebel Herbarium – Prince George's Co., Greenbelt, on hill of concrete.
  1240. Sarcosagium campestre (Fr.) Poetsch & Schiedem.   [Acarosporaceae]
  1241. Syn.: Biatorella campestris (Fr.) Almq.
  1242. Skorepa et al. (1979) – on soil.
  1243. Schismatomma glaucescens (Nyl. ex Willey) R.C. Harris   [Roccellaceae]
  1244. Lendemer & Knapp (2007) - (4. Sharptown)
  1245. Scoliciosporum chlorococcum (Stenh.) Vezda   [Lecanoraceae]
  1246. Syn.: Bacidia chlorococca (Graeve ex Stizenb.) Lett.
  1247. Skorepa et al. (1977) – Montgomery Co., on oak.
  1248. Skorepa et al. (1979) – on bark.
  1249. E.G. Worthley Herbarium - Worcester Co., Milburn Landing.
  1250. E.C. Uebel Herbarium – Baltimore Co., Liberty Reservoir, on bark of Acer rubrum.
  1251. Lendemer & Knapp (2007) - (2. Idylwild)
  1252. Scoliciosporum umbrinum (Ach.) Arnold   [Lecanoraceae]
  1253. Syn.: Bacidia umbrina (Ach.) Bausch
  1254. Skorepa et al. (1977) – Garrett Co., on aspens.
  1255. Skorepa et al. (1979) – on acid rock.
  1256. Sphinctrina turbinata (Pers ex Fr.) de Not.   [Sphinctrinaceae]
  1257. E.C. Uebel Herbarium – Carroll Co., Liberty Reservoir, on Aspicilia caesiocinerea.
  1258. Sticta fuliginosa (Hoffm.) Ach.   [Lobariaceae]
  1259. E.G. Worthley Herbarium - Frederick Co., along Appalachian Trail, on soil.
  1260. Teloschistes chrysophthalmus (L.) Th. Fr.   [Teloschistaceae]
  1261. Skorepa et al. (1979) – on bark.
  1262. Tephromela atra (Huds.) Hafellner   [Bacidiaceae]
  1263. Lendemer & Knapp (2007) - (6. Pocomoke)
  1264. Thelidium minutulum Körber   [Verrucariaceae]
  1265. Lendemer & Knapp (2007) - (5. Hickory Pt.)
  1266. Thelotrema monospermum R.C. Harris   [Thelotremataceae]
  1267. Lendemer & Knapp (2007) - (6. Pocomoke)
  1268. Thelotrema subtile Tuck.   [Thelotremataceae]
  1269. Lendemer & Knapp (2007) - (5. Hickory Pt.), (6. Pocomoke)
  1270. Trapelia coarctata (Sm.) M. Choisy   [Agyriaceae]
  1271. Syn.: Lecidea coarctata (Sm.) Nyl.
  1272. Skorepa et al. (1979) – on acidic rock.
  1273. Trapeliopsis flexuosa (Fr.) Coppins & P. James   [Agyriaceae]
  1274. Syn.: Lecidea aeruginosa Borrer
  1275. Skorepa et al. (1977) – Harford Co., on fence post.
  1276. Skorepa et al. (1979) – on wood.
  1277. E.C. Uebel Herbarium – Prince George's Co., NE Branch of Anacostia River Bike Trail, on weathered fence rail.
  1278. Lendemer & Knapp (2007) - (2. Idylwild), (3. Chesapeake)
  1279. Trapeliopsis granulosa (Hoffm.) Lumbsch   [Agyriaceae]
  1280. Syn.: Lecidea granulosa (Hoffm.) Ach.
  1281. Skorepa et al. (1979) – on soil.
  1282. E.G. Worthley Herbarium - Montgomery Co., Great Falls, on timber.
  1283. Trypethelium virens Tuck. ex Michener   [Trypetheliaceae]
  1284. Skorepa et al. (1979) – on bark.
  1285. E.G. Worthley Herbarium - Calvert Co., on bark.
  1286. Lendemer & Knapp (2007) - (4. Sharptown), (5. Hickory Pt.)
  1287. Tuckermanella fendleri (Nyl.) Essl.   [Parmeliaceae]
  1288. Syn.: Cetraria fendleri (Nyl.) Tuck.; Tuckermannopsis fendleri (Nyl.) Hale
  1289. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  1290. Skorepa et al. (1979) – on bark.
  1291. Biechele (2002) – lower eastern shore of Maryland.
  1292. E.G. Worthley Herbarium - Wicomico Co., Wicomico State Park; on Loblolly Pine; Worcester Co., Milburn Landing, on bark of Loblolly Pines.
  1293. Tuckermannopsis americana (Sprengel) Hale   [Parmeliaceae]
  1294. Lendemer & Knapp (2007) - (4. Sharptown)
  1295. Tuckermannopsis ciliaris (Ach.) Gyelnik   [Parmeliaceae]
  1296. Syn.: Cetraria ciliaris Ach.
  1297. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  1298. Skorepa et al. (1979) – on bark.
  1299. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Wicomico Co., on bark.
  1300. Umbilicaria mammulata (Ach.) Tuck.   [Umbilicariaceae]
  1301. Syn.: Gyrophora dillenii (Tuck.) Müll.
  1302. Skorepa et al. (1977) – Garrett Co., on conglomerate.
  1303. Skorepa et al. (1979) – on bark, acidic rock.
  1304. E.G. Worthley Herbarium - Baltimore Co., Loch Raven, on rock outcrop; Frederick Co., South Mt., on boulders; Montgomery Co., Sugarloaf Mt., on boulders.
  1305. Umbilicaria muehlenbergii (Ach.) Tuck.   [Umbilicariaceae]
  1306. Skorepa et al. (1977) – Allegany Co., on rock outcrop.
  1307. Skorepa et al. (1979) – on acidic rock.
  1308. Umbilicaria vellea (L.) Hoffm.   [Umbilicariaceae]
  1309. Skorepa et al. (1977) – No locality. (collected by Plitt 1912)
  1310. Skorepa et al. (1979) – on acidic rock.
  1311. Usnea filipendula Stirton   [Parmeliaceae]
  1312. Syn.: Usnea dasypoga (Ach.) Rohl.
  1313. Skorepa et al. (1977) – Garrett Co., (collected by Smith).
  1314. Skorepa et al. (1979) – on bark.
  1315. Usnea mutabilis Stirton   [Parmeliaceae]
  1316. Skorepa et al. (1977) – Worcester Co., on pines.
  1317. Skorepa et al. (1979) – on bark.
  1318. Biechele (2002) – lower eastern shore of Maryland.
  1319. E.G. Worthley Herbarium - Worcester Co., Pocomoke State Park, on Taxodium distichum.
  1320. Usnea pensylvanica Motyka   [Parmeliaceae]
  1321. Lendemer & Knapp (2007) - (2. Idylwild), (6. Pocomoke)
  1322. Usnea strigosa (Ach.) Eaton   [Parmeliaceae]
  1323. Skorepa et al. (1977) – Worcester Co., on deciduous trees.
  1324. Biechele (2002) – lower eastern shore of Maryland.
  1325. E.G. Worthley Herbarium – Worcester Co.; Calvert Co, Battle Creek Cypress Swamp; St. Mary's Co.; Wicomico Co.
  1326. E.C. Uebel Herbarium – Baltimore Co., Ridge Rd., on bark of Norway Maple.
  1327. Lendemer & Knapp (2007) - (6. Pocomoke)
  1328. Usnea strigosa subsp. rubiginea (Michaux) I. Tav.   [Parmeliaceae]
  1329. Syn.: Usnea rubiginea (Michx.) Massal.
  1330. Skorepa et al. (1977) – Worcester Co., on deciduous trees.
  1331. Skorepa et al. (1979) – on bark.
  1332. Usnea subscabrosa Nyl. ex Motyka   [Parmeliaceae]
  1333. Lendemer & Knapp (2007) - (2. Idylwild), (4. Sharptown), (5. Hickory Pt.), (6. Pocomoke)
  1334. Usnea trichodea Ach.   [Parmeliaceae]
  1335. Skorepa et al. (1977) – Worcester Co., on tops of Cypress trees.
  1336. Skorepa et al. (1979) – on bark.
  1337. Biechele (2002) – lower eastern shore of Maryland.
  1338. Lendemer & Knapp (2007) - (6. Pocomoke)
  1339. Verrucaria calciseda DC.   [Verrucariaceae]
  1340. Skorepa et al. (1979) – on calcareous rock.
  1341. Verrucaria fuscella (Turner) Winch   [Verrucariaceae]
  1342. Skorepa et al. (1979) – on calcareous rock.
  1343. Verrucaria glaucovirens Grummann   [Verrucariaceae]
  1344. Syn.: Verrucaria virens Nyl.
  1345. Skorepa et al. (1979) – on calcareous rock.
  1346. Verrucaria muralis Ach.   [Verrucariaceae]
  1347. Skorepa et al. (1979) – on calcareous rock.
  1348. Verrucaria nigrescens Pers.   [Verrucariaceae]
  1349. Skorepa et al. (1977) – Lichens of Soldiers Delight.
  1350. Skorepa et al. (1979) – on calcareous rock.
  1351. Verrucaria pinguicula A. Massal.   [Verrucariaceae]
  1352. Skorepa et al. (1979) – on calcareous rock.
  1353. Xanthomendoza fallax (Hepp) Søchting, Kärnefelt & S. Kondr.   [Teloschistaceae]
  1354. Syn.: Xanthoria fallax (Hepp) Arn.
  1355. Skorepa et al. (1977) – Worcester Co., on deciduous trees.
  1356. Skorepa et al. (1979) – on bark, cement.
  1357. Biechele (2002) – lower eastern shore of Maryland.
  1358. Xanthomendoza fulva (Hoffm.) Søchting, Kärnefelt & S. Kondr.   [Teloschistaceae]
  1359. Syn.: Xanthoria fulva (Hoffm.) Poelt & Petutschnig
  1360. E.C. Uebel Herbarium – Baltimore Co., Ridge Rd., on bark of Norway Maple.
  1361. Xanthoparmelia angustiphylla (Gyelnik) Hale   [Parmeliaceae]
  1362. Syn.: Parmelia hypopsila Müll. Arg. = Xanthoparmelia hypopsila, but N.A. records are Xanthoparmelia angustiphylla.
  1363. Skorepa et al. (1977) – Baltimore Co., on rock outcrop.
  1364. Skorepa et al. (1979) – on acidic rock.
  1365. Xanthoparmelia conspersa (Ehrh. ex Ach.) Hale   [Parmeliaceae]
  1366. Syn.: Parmelia conspersa (Ach.) Ach.
  1367. Skorepa et al. (1977) – Garrett Co., on rock outcrop.
  1368. Skorepa et al. (1979) – on acidic rock.
  1369. E.G. Worthley Herbarium - Lichens of Soldiers Delight; Baltimore Co., Gunpowder River, on rock outcrops; Frederick Co.
  1370. Xanthoparmelia cumberlandia (Gyelnik) Hale   [Parmeliaceae]
  1371. Syn.: Parmelia cumberlandia (Gyelnik) Hale
  1372. Skorepa et al. (1977) – Baltimore Co., on rocks on hillside.
  1373. Skorepa et al. (1979) – on acidic rock.
  1374. Xanthoparmelia plittii (Gyelnk) Hale   [Parmeliaceae]
  1375. Syn.: Parmelia plittii Gyelnik
  1376. Skorepa et al. (1977) – Washington Co., on rock outcrops.
  1377. Skorepa et al. (1979) – on acidic rock.
  1378. E.C. Uebel Herbarium – Lichens of Soldiers Delight.
  1379. Xanthoparmelia subramigera (Gyelnik) Hale   [Parmeliaceae]
  1380. E.C. Uebel Herbarium – Prince George's Co., Berwyn Heights, on roof shingles (identified by Dr. Richard C. Harris).
  1381. Xanthoparmelia tasmanica (Hook. f. & Taylor) Hale   [Parmeliaceae]
  1382. Syn.: Parmelia tasmanica Hook. f. & Taylor
  1383. Skorepa et al. (1979) – on acidic rock.
  1384. Xanthoparmelia viriduloumbrina (Gyelnik) Lendemer   [Parmeliaceae]
  1385. Syn: Parmelia taractica Kremplh. = Xanthoparmelia taractica (Kremp.) Hale – known from Mexico, but misidentifications for our area; specimens in eastern N.A. are X. viriduloumbrina.
  1386. Skorepa et al. (1977) (Parmelia taractica) – Baltimore Co., on serpentine rocks.
  1387. Skorepa et al. (1979) (Parmelia taractica) – on acidic rock.
  1388. 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.
  1389. Xanthoria parietina? (L.) Th. Fr.   [Teloschistaceae]
  1390. 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. http://clade.acnatsci.org/lendemer/OP4p4.pdf
  • 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.