214 MAINE AGRICULTURAL EXPERIMENT STATION. I9I3. 



allowed to die in the Illinois Laboratory but Dr. Barrett offered 

 to look over material of the apple fungus and give his opinion 

 as to its identity with the corn Fusarium I. Later, in the fall 

 of 1911, Dr. Barrett again secured cultures of the corn Fusarium 

 and after growing it and the apple fungus for some time under 

 the same conditions sent a culture (carried in this laboratory as 

 F XXXVI) to the writer with the opinion that the, two should 

 be regarded as- distinct. 



Examination of material from young cultures of the corn 

 fungus shows that it produces a much greater proportion of 

 obovate spores than does F II from apples. In this it agrees 

 more closely with the carnation bud-rot fungus than do the 

 forms isolated from apples. 



In December. 1912, the writer made some study of the fungi 

 associated with the decay of ears of flint corn in Maine. On 

 some ears obovate spores were found and on others septate 

 Fusarium spores. Cultures were made with the result that two 

 strains or species were secured one of which, F XLVIII, pro- 

 duces large numbers of obovate spores with occasional septate 

 spores while the other, F XLIX, produces many septate spores 

 with a much smaller proportion of the obovate form. The first 

 of these fungi agrees closely with the one secured from Illinois 

 while the other seems to be identical with F II from apples, 

 showing that this may also occur on ears of corn. Since in the 

 culture studies the two strains have been found to require the 

 same conditions for growth it is probable that both occur fre- 

 quently on moldy corn. Not enough work has been done to 

 determine which is the more common in Maine. To determine 

 this would require a large number of isolations of the fungi 

 from different sources and their comparison in culture. On 

 account of the fact that no difference can be noted in their 

 effects on corn the value of this work would be questionable. 



In connection with this study, the writer has isolated fungi 

 from a number of sources for comparison with F II from apple. 

 In this way a considerable number of strains have been secured. 

 Some of these have proved to be typical species of Fusarium, 

 while a number although showing certain characteristics of 

 Fusarium have been found to produce spores of the obovate 

 type. In many cases these forms cannot be distinguished from 



