Candelariella, Ochrolechia, Physcia, and Xanthoria species new to Turkey

Candelariella kuusamoensis, Ochrolechia frigida, Physcia phaea, and Xanthoria papillifera were determined as new to Turkey and the Middle East following a recent lichenological foray in Igdir and Van regions (Turkey). Geographic distribution, substrate, chemistry, and comparisons with morphologically similar taxa are presented.