Basidiolichen is a type of lichen that consists of a fungus and an algae or a cyanobacterium. Synonyms for basidiolichen include basidiomycete lichen, basidiolichens, basidiomata lichens, and basidiomycetous lichens. Basidiolichens are unique from other lichen species in that they contain a specialized group of fungi, called the basidiomycetes, which are typically associated with fruiting bodies or mushrooms. The incorporation of these fungi in basidiolichens is thought to provide the lichen with additional nutrient sources, potentially allowing them to successfully colonize harsher terrains. Overall, basidiolichens are a fascinating type of lichen that offer unique insights into the complex relationships between fungi and algae/cyanobacteria.