The two species Parmelia ernstiae and P. serrana are reported as new to Norway from two collections each, identified by the DNA barcode marker (nrITS). A chemical analysis of selected specimens of P. saxatilis s. lat. revealed an additional 29 collections of the two species due to the presence of fatty acids. An analysis of seven morphological and chemical characters currently used for distinguishing the two species failed, however, and the two species are hence regarded as morphologically cryptic.
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