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Dryad

Data from: Myriospora molybdina comb. nov. and the identity of Acarospora hysgina

Data files

Jan 07, 2024 version files 307.51 KB

Abstract

The nomenclature and taxonomy of Acarospora molybdina is revised using morphological and molecular data. The new combination Myriospora molybdina is proposed and Acarospora hysgina is recognized as a distinct species while A. brunneola is reduced to synonymy with A. hysgina. In its new circumscription Myriospora molybdina is an arctic species, in Scandinavia only occurring in northernmost Norway. Further localities are reported from Greenland, Russia, Svalbard and the U.S.A (Alaska). Acarospora hysgina is the correct name for populations distributed along the west coast of Sweden and Norway, formerly thought to belong to A. molybdina. Localities are also reported from Canada (New Brunswick), Greenland and the U.S.A. (Maine). The following names are lectotypified; Acarospora brunneola, Acarospora molybdina var. confusa, Lecanora ereutica β microcyclos, Parmelia ereutica, P. hysgina and P. molybdina.