sourceTaxonName: Puccinia helianthi
targetTaxonName: Helianthus annuus
localityName: United States
referenceCitation: Markell, S., Gulya, T., McKay, K.T., Hutter, M., Ulstad, V., Koch, R., and Knudsvig, A.. 2009. Widespread occurrence of the aecial stage of sunflower rust caused by %Puccinia helianthi% in North Dakota and Minnesota in 2008. Pl. Dis. 93:668