sourceTaxonName: Plasmopara halstedii
targetTaxonName: Helianthus annuus
localityName: United States
referenceCitation: Gilley, M.A., Gulya, T.J., Seiler, G.J., Underwood, W., Hulke, B.S., Misar, C.G., and Markell, S.G.. 2020. Determination of virulence phenotypes of %Plasmopara halstedii% in the United States. Pl. Dis. 104(11):2823-2831