 (2012) placed "C. geophilum in" the Gloniaceae as a close relative to members of the Genus Glonium.It is not unusual to find "Cenococcum geophilum" mycelium and ectomycorrhizas in high relative frequency in soil where ectomycorrhizal tree hosts are present.Unlike many ectomycorrhizal fungi, "Cenococcum geophilum" readily colonizes the fine roots of most ectomycorrhizal hosts.