Fomes fomentarius is a wood-decaying macrofungus with potential for biotech applications. Researchers identified three distinct lineages/sublineages, with North American strains in sublineage A1 and European strains in A2. Lineage B includes strains from Europe and Asia. Studying these lineages/sublineages could lead to improved characterization for better biotech applications. The medicinal value of F. fomentarius is also discussed.