154 



been altogether upset by Mr. Morris of Keir, who has compared 

 a Jamaica specimen with a portion of Thumen's type, which is 

 in the Kew Herbarium. The result of this comparison is, that 

 Uredo vialoe is identical with Uredo vitis, and that the species 

 is found in the United States as well as the West Indies. 



Mr. Morris writes that directly he saw the specimen I sent^ 

 he remembered having obtained a similar fungus fi'om vines at 

 King's House, through Mr. Hart, many years ago. This, as Mr. 

 Hart has already explained (see note No. 32), was the first 

 known occurrence of the grape-rust in Jamaica. Mr. Morris 

 adds ; —My impression at the time was that the rust had come 

 from the United States either with vine cuttings or on some 

 American black-berries. These latter had a large crop of rusty 

 leaves soon after their arrival, but they were destroyed before 

 I had secured a specimen for identification. The disease should 

 be dealt with by collecting the leaves and burning them as soon 

 as they show signs of being affected. A dusting of a mixture 

 of sulphur and lime might be tried at short intervals while the 

 leaves are in a growing state, but this would be useless when 

 the leaves are already attacked." 



Jany. 21st. 1893. 



