Diplotomma, Lecanora, and Xanthoria lichen species new to Turkey

During a recent excursion in Kemaliye district of Erzincan region (Turkey), we sampled lichens from 6 localities, among which Diplotomma hedinii, Lecanora valesiaca, and Xanthoria weberi were determined as new to Turkey and the Middle East and X. weberi also new to Asia. Geographic distribution, substrate, chemistry, and comparisons with morphologically similar taxa are presented.