Nipponoparmelia perplicata sp. nov. (Parmeliaceae, Ascomycota) from eastern Asia

A new species, Nipponoparmelia perplicata described from Korea and Russia, is segregated from N. laevior, from which it differs in having shorter and wider lobes that characteristically turn down towards the margins. The pseudocyphellae are inconspicuous, positioned along the lobe margins or on the underside. An improved description of N. pseudolaevior is presented, including new data on isidia with illustrations. A key to Korean Nipponoparmelia species is provided.