Abstract
Lecideoid lichen-forming fungi are a large, heterogeneous assemblage including numerous taxa of unclear status. We revise five saxicolous lecideoid taxa described or reported from Fennoscandia. Carbonea nivaria was found to be a distinct species and a first full modern description is given here. It is only known from the Austrian Alps, with later records from Sweden being based on misidentifications. We found that four other taxa are synonyms of previously recognized species: Lecidea distensa (= Miriquidica leucophaea), L. haemensis (= Bryobilimbia ahlesii), L. rhizocarpoides (= Schaereria fuscocinerea) and L. satakuntensis (= Miriquidica plumbeoatra). Lectotypes are designated for the basionyms Lecidea distensa, L. haemensis, L. satakuntensis and Lecidella nivaria.
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