Is a remarkable species – Caloplaca flavescens (lichenized fungi) – new to the Polish lichen biota?

Abstract

Caloplaca flavescens is reported for the first time from Poland with all known localities citation. Diagnostic characters for the species are narrow, convex marginal lobes that are separated by furrows and gray crystals within the thallus cortex that are prominent in polarized light as well as lemon-shaped ascospores. Species of similar appearance include C. aurantia, C. thallinicola and some members of C. saxicola group. Differences between these species are briefly discussed. An up-to-date distribution map for C. flavescens in Poland is presented.

Keywords

• lichens
• Caloplaca
• new records