sourceTaxonName: Ceratocystis ulmi
targetTaxonName: Ulmus procera
localityName: United States
referenceCitation: Jones, R.K., Krass, C.J., and Sava, R.J.. 1978. Isolation of %Ceratocystis ulmi% from 14-year-old annual rings of Eng lish elm in California. Pl. Dis. Reporter 62:994-995