Records of Host-pathogen associations used in the study

We analyzed the 7101 records from the fungus-host distribution database (https://nt.ars-grin.gov/fungaldatabases/fungushost/fungushost.cfm) that served as a basis for our study on the Sclerotiniaceae. Host species were classified as crops (crop) according to the USDA Natural Resources Conservation Service database (https://plants.usda.gov/npk/main), other cultivated plants (cult), ornamental plants (orn) and “others”, including largely wild plant species (wild). A total of 37% of the Fungus-Host database entries were from the USA (US), 17% from Europe (Eur), leaving a total of 46% of the entries that were neither from the USA or Europe (Afr, Africa; Asia; Can, Canada; Oce, Oceania; SA, South America; ?, others). These distributions do not reveal a strong bias towards crops or USA/Europe records in the records used for this analysis.