vm 



PREFACE 



approximately 1200 of which had not previously been described. 

 Were this his only accomplishment, it would constitute an ever- 

 enduring monument and an inspiration to students of fungi in 

 all parts of the world. His wood-cut picture, appearing as the 

 frontispiece, was supplied by his great-granddaughter. Dr. Ade- 

 laide L. Fries, and it is our special pleasure to acknowledge this 

 courtesy. 



F. A. Wolf 

 F. T. Wolf 

 February, 1947 



