sourceTaxonName: Diaporthe ambigua
targetTaxonName: Pyrus communis
localityName: South Africa
referenceCitation: Smit, W.A., Viljoen, C.D., Wingfield, B.D., Wingfield, M.J., and Calitz, F.J.. 1996. A new canker disease of apple, pear, and plum rootstocks caused by %Diaporthe ambigua% in South Africa.. Pl. Dis. 80:1331-1335