Johnsheardia

Johnsheardia is a genus of lichen-forming fungi in the family Physciaceae. It comprises five species that were previously included in the genus Rinodina. The genus was established in 2021 on the basis of molecular evidence showing that these species form a distinct evolutionary lineage, although this split has not been universally adopted by lichen taxonomists. Species are characterised by crustose thalli ranging from brownish grey to reddish brown, typically growing on moss cushions, plant litter, or calcareous rocks....read more on Wikipedia.