OLICH: A reference library of DNA barcodes for Nordic lichens

DNA barcodes are increasingly being used for species identification amongst the lichenised fungi. This paper presents a dataset aiming to provide an authoritative DNA barcode sequence library for a wide array of Nordic lichens. We present 1324 DNA barcode sequences (nrITS) for 507 species in 175 genera and 25 orders. Thirty-eight species are new to GenBank and, for 25 additional species, ITS sequences are here presented for the first time. The dataset covers 20–21% of the Nordic lichenised species. Barcode gap analyses are given and discussed for the three generaCladonia,RamalinaandUmbilicaria. The new combinationBryobilimbia fissuriseda(Poelt) Timdal, Marthinsen & Rui is proposed forMycobilimbia fissurisedaand Nordic material of the species, currently referred to asPseudocyphellaria crocataand Psoroma tenue ssp. boreale, are shown to belong inPseudocyphellaria citrinaandPsoroma cinnamomeum, respectively.