288 BUSH-FRUITS 



seem to indicate that this is unnecessary. In setting a new plan- 

 tation, care should be used to secure plants free from the disease. 

 If not wholly free, cut the old wood away as close as possible. 

 Spraying the young shoots when they have reached a height of 

 six or eight inches, and once or twice thereafter, will prove an 

 additional precaution, and the cost at that time will be slight. If, 

 then, the plantation is given good care, it is not likely to seriously 

 suffer until after it has produced its best crops. The longer the 

 bushes remain, the more troublesome is the disease likely to be- 

 come. It will, therefore, generally be more satisfactory to remove 

 the plants after they have borne their third crop. If spraying is 

 resorted to, it should be remembered that [the mycelium remains 

 alive in the canes during the winter, and that spraying can in no 

 way cure the disease. It can only prevent, if thoroughly done, 

 the germination of spores as they are produced. 



Glceosporium Rubi, Ell. and Ev. Jour. Myc. 4: 52. Saccardo, Syll, 

 Fung. 10: 450. 



Found on leaves of Eubus nigrobaccus, associated with Puccinia 

 interstitialis, by Prof. S. M. Tracy, at Starkville, Miss. 



Although closely related to the preceding species, it seems to 

 be less common and of less importance. It is not easily dis- 

 tinguished from the other, and both should be treated alike. 



LEAF -SPOTS 



Septoria Rubi, West. Order Sphaeropsidese : Family Sphaerioideae. 



Saccardo, Syll. Fung., 3: 486. Martin, Jour. Myc., 3: 73. Goff, Kept. 

 U. S. Dept. Agr., 1890: 399. 



On leaves of most species of the genus. 



The following varieties have been named: 



Septoria Rubi pallida, Ell. and Howl. Martin, Jour. Myc. 



3 : 73 ; on leaves of Rubus hispidus. 

 Septoria Rubi alba, Peck. Eept. N. Y. Mus. 34: 57; on 



Rubus nigrobaccus, R. villosus, and R. trivialis. 



This is one of the commonest species affecting the genus, and 

 when abundant is without doubt injurious to the plant, owing to 

 the amount of leaf tissue which is killed by it and thus prevented 



