An ephemeral sexual population of Phytophthora infestans in the Northeastern United States and Canada. oleh Giovanna Danies, Kevin Myers, María F Mideros, Silvia Restrepo, Frank N Martin, David E L Cooke, Christine D Smart, Jean B Ristaino, Abby J Seaman, Beth K Gugino, Niklaus J Grünwald, William E Fry