-30- 



Agriculti ral Experiment Station, resembled strain 3, which strain 

 typicelly has htd, ever fince I have posnerped it, duety -looking 

 drab-colored pustules, and which was called by Dr. i"esterdijk Sclerotinia 

 fructigena and that this strain 3 so closely resembled strain 1, or the 

 California fruit rot form, that they could not be distinguished* These 

 three strains were similar to several others, namely 5, Oregon 

 Sclerotinia cinerea, 6, Michigan Sclerotinia cinerea, 7, Apricot twig 

 Sclerotinia (California), 9, Westerdijk'i apricot Sclerotinia, 10, 

 resterdijk's plum Sclerotinia, 11, Westerdijk't cherry Sclerotinia, 

 13, "ashinp/ton prune blossom Sclerotinia, and 14, Washington prune 

 Sclerotinia. 



Strain 5 as it appeared on the cherries was characteristic for this 

 strain, that is it was similar to strain 1, Strains 6 and 7 acted in 

 a typical manner. Strain 8 which habitually produced abundant mycelium 

 acted in a characteristic manner. No eporos could be detected on the 

 fruit. Strains 9, 10 and 11 were all characteristic and similar to 

 strain 1. Strain 12 appeared as formerly with compact, felty-looking 

 cream colored pustules. Strains 13 and 14 showed to be similar to strain 

 1, while strains 15 and 16 failed to develop. 



As far as macroscopic characteristics go there were three different 

 types that developed on the cherries. 



(1) Profuse somewhat loose spore pustules drab (S) in color. 

 Strain 1 typical. 



(2) Profuse, compact, felty-looking spore pustules cream (S) in 

 color. Strain 12 the only strain. 



