CONTENTS 



PAGE 



Introductory 97 



Scope of work 100 



Source and methods of isolation 101 



Culture media 104 



Effect of various media on different characters of Fusaria 106 



Effect of hght and of reaction of the medium on different characters 



of Fusaria 107 



The genus Fusarium ; 108 



Variabihty in the Fusaria Ill 



Relative taxonomic importance of different characters 113 



Forms of fructification in pure cultures. 114 



Spores 114 



Forms of fructification 114 



Method of study and presentation 116 



Identification of the Fusaria with previously described species 120 



Systematic arrangement of the species of Fusarium of potatoes 121 



Dichotomous key to the species of Fusarium and Fusarium-like 



fungi of potatoes 123 



Descriptions of sections, genera, species, and varieties 125 



Literature cited 269 



