Molecular phylogenetic analyses reveal two new synonyms of Xanthoria parietina
Andrei Tsurykau 1, 2  
,   Pavel Bely 3,   Ulf Arup 4
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Department of Biology, Francisk Skorina Gomel State University, Sovetskaja 104, BY-246019 Gomel, Belarus
Department of Ecology, Botany and Nature Protection, Institute of Natural Sciences, Samara National Research University, Moskovskoye shosse 34, RU-443086 Samara, Russia
Laboratory of Ecological Physiology of Plants, Central Botanical Garden of the National Academy of Sciences of the Republic of Belarus, Surganova 2B, BY-220012 Minsk, Belarus
Biological Museum, Lund University, Box 117, SE-22100 Lund, Sweden
Online publication date: 2020-12-29
Publication date: 2020-12-29
Plant and Fungal Systematics 2020; 65(2): 620–623
Molecular analyses of the recently described Xanthoria polessica collected from the type locality and of the Australian species X. coomae were used to determine whether these taxa are distinct species or fall within the wide phenotypic variation of the well-known and cosmopolitan X. parietina. Our results clearly indicate that both taxa should be considered as synonyms of X. parietina since the infraspecific morphological range is accommodated by the observed variation in the thallus and lobe size, their color, position of apothecia, the shape of ascospores, and width of ascospore septum.