sourceTaxonName: Heterobasidion annosum
targetTaxonName: Pinus ponderosa
localityName: United States
referenceCitation: Otrosina, W.J., and Garbelotto, M.. 2010. %Heterobasidion occidentale% sp. nov. and %Heterobasidion irregulare% nom. nov.: A disposition of North American %Heterobasidion% biological species. Fung. Biol. 114:16-25