sourceTaxonName: Puccinia helianthi
targetTaxonName: Helianthus annuus
localityName: United States
referenceCitation: Bradley, C.A., Pataky, N.R., Gulya, T., Friskop, A., Jordahl, J., and Markell, S.. 2010. First report of virulence phenotypes of %Puccinia helianthi%, causal agent of sunflower rust in Illinois. Pl. Dis. 94:273