292 BUSH-FBUITS 



111. He sent 'specimens of it to Dr. Winter, of Germany, who 

 described it as a new species, referring it provisionally to the 

 genus Fusisporium. It is well known to growers in certain sec- 

 tions under its common name "Double -Blossom." It has been 

 especially troublesome on the Wilson Early blackberry, and in 

 portions of New Jersey has caused immense damage, often 

 ruining entire fields. 



Treatment. — Few, if any, experiments have been made in trying 

 to combat it with fungicides, and it will probably be found diffi- 

 cult to control in that manner. In fact, until a careful study of 

 its life history has been made, any attempt to suggest a remedy 

 can be little more than guess work. 



Brown Rot 



Monilia fructigena, Pers. 



Saccardo, Syll. Fung. 4: 34. Arthur, Rept. N. Y. State Exp. Sta. 3: 254. 

 Smith, Jour. Myc. 5: 123. Galloway, Rept. U. S. Dept. Agr. 1888: 349. 

 Humphrey, Bot. Gaz. 18: 85. 



Order Hyphomyceteas. Family Mucedinese. 



On fruit of apples, peach, plum, cherry, etc. 



This is the well-known brown rot of the stone fruits. Al- 

 though injurious chiefly on this class of fruits. Professor Arthur 

 has induced it to grow on ripe blackberries, and it may be one of 

 the forms which hasten their destruction when over- ripe. 



OTHER IMPORTANT DISEASES 



Bacterial Disease (Fig. 46) 

 In addition to the fungous diseases mentioned, there are one or 

 two maladies whose natures are not so well understood, but which 

 promise to be serious enemies. The first of these is a bacterial 

 disease affecting the canes. Its presence is shown by the ap- 

 pearance of dark purplish spots which have a comparatively regu- 

 lar outline and vary much in size, sometimes extending until a 

 single spot wholly encircles the cane. They are perfectly smooth 

 at first, but later the epidermis within the spots often becomes 

 ruptured and slitted. Burrill has suggested that this may be 

 identical with pear blight. As yet it is uncertain how much 

 damage it may cause. 



