Parmeliaceae (Ascomycota) lichens in China's mainland III. The genus Parmotrema

The genus Parmotrema in mainland China has been revised and 37 species are recognized. Of these Parmotrema laeve is reported as a new combination, 12 species are reported as new to China [P. applanatum, P. andinum, P. deflectens, P. eunetum, P. gardneri, P. immiscens, P. louisianae, P. margaritatum, P. pseudotinctorum, P. sipmanii, P. subarnoldii and P. subochraceum] and 3 species are recorded in mainland China for the first time [P. dilatatum, P. permutatum, and P. subcorallinum]. Parmotrema subtropicum is reduced to synonymy with P. overeemii, while the occurrence of 6 species reported previously could not been confirmed [P. latissimum, P. conformatum, P. hababianum, P. perforatum, P. sulphuratum and P. zollingeri].