1. United States Department of Agriculture, Agricultural Research Service, Systematic Botany and Mycology Laboratory, Rm. 304, B-011A, BARC-W, Beltsville, Maryland 20705
2. Centraalbureau voor Schimmelcultures, P.O. Box 85167, 3508 TC Utrecht, The Netherlands
3. Tèra d'Sott 5, CH-6949 Comano, TI, Switzerland