A DISEASE OF CURRANT CANES. 



I. GENERAI^ CHARACTER OF THE DISEASE. 



During the last few 

 years there has existed, 

 in various portions of 

 New York state, a dis- 

 ease of currant bushes, 

 which has been more or 

 less destructive to the 

 currant industry. The 

 trouble was first called 

 to the attention of the 

 Experiment Station staff 

 in June, 1895, when a 

 diseased bush was re- 

 ceived at the Botanical 

 Department from Port- 

 land, Chautauqua 

 count3^ Outside of this 

 locality its effects have 

 since been observed by 

 the present writer at 

 Canandaigua, Ontario 

 county, and in the gar- 

 dens of the Horticultural 

 Department of Cornell 

 University, in Tompkins 

 county. It has also been 

 noticed by Professor GF. 

 Atkinson in St. Lawrence county. Outside of New York state 

 it has been reported from New Jersey by Dr. B. D. Halsted. 



Inasmuch as the disease seemed to be a destructive one its 

 study was thought to be of interest and importance. It was de- 



t. b. c. 



Diseased currant canes, natural size (a, Tuber- 

 cUsof Tubercularia ; b, clusters of perithecia 

 of Necltia ; c, clusters of perithecia of Pleon- 

 ecttia). 



