Relicina

Relicina is a genus of foliose lichens belonging to the large family Parmeliaceae. Established as a genus in 1974 after initially being treated as a series within Parmelia, Relicina now encompasses about 40 species worldwide. These lichens typically grow as yellow-green, leaf-like patches with flat fringed by short black hairs, attaching to their substrate by a swollen base. The genus is characterized chemically by the presence of usnic acid and various other lichen products, and is distinguished from related groups by details of ascospore structure and surface features.

==Taxonomy== Relicina was originally conceived as a series of the large genus Parmelia by lichenologists Mason Hale and Syo Kurokawa in 1964. A decade later, they promoted it to the status of genus.