Answers are grounded in this paper and cite their sources.
Detailed morphological and anatomical studies informed by molecular inferences with mtSSU as a marker revealed two new species ofMicareain Western Europe, both belonging to the core group of the genus, namely theM. prasinagroup:M. herbarumfrom the Netherlands and Poland andM. meridionalisfrom Portugal and Italy.Micarea herbarumlooks like a small or depauperateM. denigratabut clearly differs by the lack of gyrophoric acid, whileM. meridionalisis distinguished by its granular thallus and the production of micareic acid.
No takes yet. Share an insight, caveat, or question.
Boom et al. (2017) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: