sourceTaxonName: Diaporthe helianthi
targetTaxonName: Helianthus annuus
localityName: United States
referenceCitation: Mathew, F.M., Alananbeh, K.M., Jordahl, J.G., Meyer, S.M., Castlebury, L.A., Gulya, T.J., and Markell, S.G.. 2015. %Phomopsis% stem canker: A reemerging threat to sunflower (%Helianthus annuus%) in the United States. Phytopathology 105:990-997