The Pinf data set contains 86 isolates genotyped over 11 microsatellite loci collected from Mexico, Peru, Columbia, and Ecuador. This is a subset of the data used for the reference below.
data(Pinf)a [genclone-class] object with 2 hierarchical levels called "Continent" and "Country" that contain 2 and 4 populations, respectively.
Goss, Erica M., Javier F. Tabima, David EL Cooke, Silvia Restrepo, William E. Fry, Gregory A. Forbes, Valerie J. Fieland, Martha Cardenas, and Niklaus J. Grünwald. "The Irish potato famine pathogen *Phytophthora infestans* originated in central Mexico rather than the Andes." Proceedings of the National Academy of Sciences 111:8791-8796. doi: tools:::Rd_expr_doi("10.1073/pnas.1401884111")