Synonymizations And Lectotypifications Of Some Lecideoid Lichens (Ascomycota, Lecanoromycetes) Described From Finland Or Sweden

Between 1850 and 1950, hundreds of lecideoid lichen-forming fungi were described from Fennoscandia, mainly in the genus Lecidea. The status of many of these species is still uncertain and some have not been revised since their description. We examined types and nomenclature of nine such lecideoid taxa, and found that they represent synonyms of earlier described species: Bacidia dolera (= Lecidea albofuscescens), Lecidea aviaria (= Rhizocarpon richardii), L. cavernarum (= Porpidia soredizodes), L. cuculi (= Schaereria fuscocinerea), L. frustulenta (= Micarea subnigrata), L. ivalensis (= Carbonea vorticosa), L. melaphanoides (= Scoliciosporum intrusum), L. mustialensis (= L. albofuscescens) and L. submilvina (= Miriquidica leucophaea). In addition, we examined types and nomenclature of three synonyms of Lecanora cadubriae: Biatora admixta, B. pinicola and Lecidea subinsequens. Lectotypes are designated for the basionyms Biatora admixta Th.Fr., Biatora pinicola Th.Fr. ex Hellb., Lecidea cuculi Vain., Lecidea fuscocinerea Nyl., Lecidea ivalensis Vain., Lecidea melaphanoides Nyl. and Lecidea subinsequens Nyl.