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As apothecia 1 have never bean reported in California and as they are 

 often difficult to get in other places, the cultural work has been confined 

 to the Monilia stage. 



1. I searched in the spring of 1917 during the blossoming period of the 

 apricot trees for apothecia of our fruit rot, Sclerotinia. and for apothecia 

 * Sclerotinia libertiana. I brought to the laboratory from one orchard 

 several of what I supposed to be Sclerotinia libertiana apothecia. These 

 were all taken from the soil and none had any evident connection with a 

 "mummy ". Miss Smith (assistant professor of Plant Pathology at the 

 University of California) placed these apothecia in a moist chamber with the 

 adhering soil and considerable water. In a short time three apothecia 

 showed to be slightly different from the typical Sclerotinia libertiana 

 apothecia. They were somewhat darker and redder, a little coarser and 

 tougher and more cup-shaped. Miss Smith used two of these apothecia to 

 make rough cultures, first rinsing off the apothecium with distilled water 

 and then planting a piece of it in a flask of bread and prune juice. From 

 four flaeks three apparently pure culture* of I'onilia were obtained* 

 Examination of the asci and ascospores of the other apotheciua revealed 

 a great ciuj, similarity to Sclerotinia libertiana asci and ascospores. 

 The spores were somewhat larger than the spores of Sclerotinia libertiana 

 and were inclined to be egg shaped, and posse sued a ready ability to form 

 a cross wal] , and produce sterigmata and gonidia without first producing 

 mycelium* Gonidia were sometimes produced directly by an ascospore without 

 the interposition of a typical sterigma. The spores <xf Sclerotinia 

 liber Jiang do not act this way, as far a* I know. The above fact* are 

 extremely suggestive. 



Other persons have searched for the apoihecla of our fruit rot, 

 Sclerotinia, but have not found them to their knowledge, apparently three 

 of those mentioned above were apothecia of our fruit rot Sclerotinia. Ihere 

 seems to be some chance of confusing then with the often abundant apothecia 

 of Sclerotiuia libertiana. 



