| Dacampiosphaeria rivana (De Not.) D. Hawksw. = Pyrenidium actinellum |
| Dactylospora inspersa sensu Mudd = Dactylospora parasitica |
| Dactylospora lamyi (O.J. Rich.) Arnold = Opegrapha lamyi |
| Dendriscocaulon bolacinum Nyl. = Lobaria amplissima (blue-green phycotype) |
| Dendriscocaulon umhausense (Auersw.) Degel. = Lobaria amplissima (blue-green
phycotype) |
| Dendrophoma alcicornaria (Linds.) Vouaux = Lichenosticta alcicornaria |
| Dermatina hippocastani (DC.) Oksner = Cyrtidula hippocastani |
| Dermatina quercus (A. Massal.) Zahlbr. = Cyrtidula quercus |
| Dermatina quercus var. ilicis Riedl = name of uncertain application (type lost) |
| Dermatina swinscowii Riedl = Arthothelium lirellans |
| Dermatocarpella squamulosa (Ach.) H. Harada = Catapyrenium squamulosum |
| Dermatocarpon aquaticum (Weiss) Zahlbr. = Dermatocarpon luridum |
| Dermatocarpon cinereum (Pers.) Th. Fr. = Catapyrenium cinereum |
| Dermatocarpon fluviatile (Weber) Th. Fr. = Dermatocarpon luridum |
| Dermatocarpon hepaticum = Catapyrenium lachneum |
| Dermatocarpon hepaticum = Catapyrenium squamulosum |
| Dermatocarpon insulare (A. Massal.) Mig. = Verrucaria fuscula Nyl. |
| Dermatocarpon insulare = Verrucaria latericola |
| Dermatocarpon lachneum (Ach.) A.L. Sm. = Catapyrenium lachneum |
| Dermatocarpon lachneum (esp. lowland records) = Catapyrenium squamulosum |
| Dermatocarpon lachneum = Catapyrenium rufescens |
| Dermatocarpon leptophyllum (Ach.) K.G.W. Lеng = Dermatocarpon macrocarpum (Taylor)
A.L. Sm., Verrucaria macrostoma |
| Dermatocarpon leptophyllum p.max.p. = Dermatocarpon meiophyllizum |
| Dermatocarpon meiophyllum = Dermatocarpon meiophyllizum |
| Dermatocarpon miniatum var. complicatum = Dermatocarpon intestiniforme |
| Dermatocarpon miniatum var. complicatum = Dermatocarpon miniatum |
| Dermatocarpon miniatum var. leptophyllum = Dermatocarpon meiophyllizum |
| Dermatocarpon polyphyllum Dalla Torre & Sarnth. = Dermatocarpon intestiniforme |
| Dermatocarpon psoromoides (Borrer) Dalla Torre & Sarnth. = Catapyrenium
psoromoides |
| Dermatocarpon rufescens (Ach.) Th. Fr. = Catapyrenium rufescens |
| Dermatocarpon weberi (Ach.) Mann = Dermatocarpon luridum |
| Desmazieria evernioides auct., non (Nyl.) Follman & Huneck = Ramalina lacera |
| Dibaeis roseus [sphalm.] = Dibaeis baeomyces |
| Didymella collemata Vouaux = Didymellopsis collematum |
| Didymella epipolytropa (Mudd) Berl. & Voglino = Cercidospora epipolytropa |
| Didymella pulposi Vouaux = Didymellopsis pulposi |
| Didymella sphinctrinoides (Zwackh) Berl. & Voglino = Zwackhiomyces sphinctrinoides |
| Didymosphaeria epipolytropa (Mudd) G. Winter = Cercidospora epipolytropa |
| Didymosphaeria microsticta (Mudd) G. Winter = Polycoccum microstictum |
| Didymosphaeria neottizans (Leight.) A.L. Sm. = Pyrenidium actinellum |
| Didymosphaeria peltigerae Fuckel = Polycoccum peltigerae |
| Dimerella diluta (Pers.) Trevis. = Dimerella pineti |
| Diplodina lichenoides A.L. Sm. = Crustodiplodina lichenoides (A.L. Sm.) Punith. |
| Diplodina sandstedei Zopf = Epicladonia sandstedei |
| Diplodina solorinaria (Linds.) Vouaux = Rhagadostoma lichenicola |
| Diplodina vouauxii de Lesd. = Lichenodiplis lecanorae |
| Diploicia epigaea = Buellia asterella |
| Diploschistes actinostomus var. caesioplumbeus (Nyl.) J. Steiner = Diploschistes
caesioplumbeus |
| Diploschistes albissimus = Diploschistes gypsaceus |
| Diploschistes bryophilus (Ehrh. ex Ach.) Zahlbr. = Diploschistes muscorum |
| Diploschistes lichenicola (Mont.) Vain. = Diploschistes muscorum |
| Diploschistes scruposus var. bryophilus (Ach.) Mьll. Arg. = Diploschistes muscorum |
| Diploschistes scruposus var. parasiticus (Sommerf.) Zahlbr. = Diploschistes muscorum |
| Diplotomma calcareum (Ach.) = Rhizocarpon umbilicatum |
| Diplotomma epipolium = Diplotomma venustum |
| Diplotomma hedinianum (H. Magn.) P. Clerc, comb. inval. = Diplotomma venustum |
| Diplotomma pulverulentum (Anzi) D. Hawksw. = Buellia pulverulenta |
| Dirina immersa f. sorediata Mьll. Arg. = Dirina massiliensis f. sorediata |
| Dirina repanda (Fr.) Nyl. = Dirina massiliensis f. massiliensis |
| Dirina repanda f. stenhammarii (Fr. ex Stenh.) Clauzade & Cl. Roux = Dirina
massiliensis f. sorediata |
| Dirina stenhammarii (Fr. ex Stenh.) Poelt & Follmann = Dirina massiliensis f.
sorediata |
| Discocera lichenicola A.L. Sm. & Ramsb. = Lecidea lichenicola |
| Discothecium acervatum (Stirt.) A.L. Sm. = Polycoccum trypethelioides |
| Discothecium calcaricola (Mudd) Vouaux = Endococcus rugulosus |
| Discothecium gemmiferum = Endococcus propinquus |
| Discothecium gemmiferum var. brachysporum = of uncertain application |
| Discothecium gemmiferum var. calcaricola (Mudd) Keissl. = Endococcus rugulosus |
| Discothecium gemmiferum var. physciicola (Nyl.) Vouaux = Endococcus parietinus |
| Discothecium squamarioides (Mudd) Keissl. = Polycoccum squamarioides |
| Discothecium stereocaulicola (Linds.) Vouaux = Polycoccum trypethelioides |
| Discothecium stigma = Endococcus perpusillus |
| Duncaneana Coppins ad int. = Placynthiella |
