214 RErOKT OF THE BoTANIST OF THE 



* 



same field and under parallel conditions suffered but slightly. In 

 a plantation of red raspberries at Marlboro, canes ■which passed 

 the winter tied up to stakes were killed back from six to eighteen 

 inches. The injury was worse on low ground. 



CANE BLIGHT. 



( ? Phoma.) 



In various localities in the northern part of the district there 

 is a common disease of raspberries, which may be called cane 

 blight for want of a better name. On June 1 it was observed at 

 Coxsackie on black raspberries. Its attacks were confined almost 

 exclusively to old canes. The owner states that it rarely attacks 

 young canes, but did so to some extent last season. Some canes 

 were dead, others nearly dead, and still others showing the first 

 symptoms. The affected canes showed a brownish black discolora- 

 tion of the bark which Avas dead. Usually the discoloration ex- 

 tended the whole length of the cane on one side only, the bark 

 on the other side remaining alive and green. Numerous pycni- 

 dia of at least four different species of fungi were found on the 

 dead bark. The predominating form was a species of Phoma 

 having small, round or slightly ellipsoidal spores with a brownish 

 tinge. 



At Poughkeepsie on June 20, we found what appeared to be 

 the same disease killing the canes of black raspberries. It was 

 destructive. Canes here and there were dying and their abundant 

 fruit, which was nearly ripe, was drying up. The owner thought 

 it the effect of drought. Here, as at Coxsackie, only the fruiting 

 canes were affected. The affected plantation was an old one. 

 An adjacent plantation of young plants of the same variety was 

 not affected. The tendency of the canes to die on one side was 

 not so pronounced as at Coxsackie, but pycnidia of the same 

 Phoma were abundant and occurred so close to the healthy bark 

 as to indicate that the fungus was parasitic. 



On July 19 the same disease on black raspberries was found at 

 Voorheesville. Here it had ruined one-third of the crop. It was 



