Origin: North America
First finding in Slovenia: not yet found in Slovenia
Pathways: transported with infected wood, secundary spreadying also with wind and insects
Possible to identify: year-round
Habitat: Affects all coniferous trees. Fruiting bodies mainly on dead trees, including cut wood, more rarely also on living ones.
Status in Slovenia: Occurs about 100 k from Slovenia at the Tyrrhenian coast of Italy.
Similar species: Heterobasidion annosum, H. parviporum, H. abietis.