Saxiloba

Saxiloba is a genus of lichen-forming fungi in the family Porinaceae. It comprises three species of saxicolous (rock-dwelling) placodioid lichens, known from disjunct locations in the Caribbean, Hawaii, and Brazil. The genus was circumscribed in 2020 to accommodate species with a distinctive placodioid thallus featuring unique surface patterns and internal crystal structures. Saxiloba lichens are characterised by their flattened, leaf-like thalli with marginal lobes, growing tightly appressed to rock surfaces. They have a complex internal structure, including large crystal clusters embedded within the photobiont layer, which may be an adaptation for light management in their typically shaded habitats....read more on Wikipedia.