-8- 



of jS. f ructigena. and compare the conidial stage of their species 

 with the conidial stage they call cinerea. The epecies they call 

 Isxa is quite distinct from J5. fructigena. but in the final analysis 

 about the only distinction between their J5. cinerea and j>. laxa ie the 

 fact that . laxa occurs naturally on apricots, and S. cinerea on other 

 stone fruits, eepecially cherries, although B. laxa is supposed to have 

 spiaewhat larger conidia than their S. cineree. 



They also decide that the form attacking peaches and plums in 

 North America is S. cinerea tnd not S. fructiRena. as Norton calls it, 

 for the following reasons: 



1. Preserved asei and aecopores they obtained from Norton are 

 somewhat stoallar than the asei and escospores of their above Sclerotinia 

 laxa. 



2. Because Smith, 2.F. describes conidim occurring on the peach 

 in the Eastern United States as ashen-gray. 



The first reason they think bars Norton's species from lax*, the 

 second reason from fructigena. 



Following are the principal distinguishing characteristics of 

 Sclerotinia fructigena as given by Aderhold and Ruhland (3): 



