164 KErOET OF THE BoTANIST OF THE 



Accurate information is lacking as to the susceptibility of dif- 

 ferent varieties. Montmorency"^ has been more commonly af- 

 fected than any other variety, but English Morello and some 

 other varieties have shown it to a considerable extent. 



From the experience of Maxwell Bros., it would appear tliat 

 little harm is likely to result from this scorching of the foliage, 

 but it seems incredible that a cherry tree can lose a large part of 

 its foliage in July or August without affecting its productiveness. 

 The effect must be the same as if the leaves were removed at this 

 time. We shall watch the Maxwell orchard with interest the 

 coming season. 



LEAF SCOKCH, OE TIP BUKIsT, OF CAULIFLOWER. 



On September 1 Mr. F. A. Sirrine, Entomologist at our Branch 

 Office on Long Island, sent to the Station some cauliflower leaves 

 the margins of which were blackened and shriveled. The di- 

 seased leaves were accompanied by a letter saying that throughout 

 eastern Long Island the partly unfolded leaves of cauliflower 

 were quite generally affected in this manner. On September 7, 

 in company with Mr. Sirrine, the writer visited some of the af- 

 fected cauliflower fields in the vicinity of Mattituck. At this 

 time the affected leaves were growing and appeared normal ex- 

 cept for their crisp, brow^n or black margins. The newest leaves 

 were entirely free from the trouble showing that the cause of 

 the blackening was not then active. It was quite plainly another 

 case of leaf scorch. 



Large plants were more severely injured than small ones. The 

 worst affected field observed was one in which the plants were 

 very large and thrifty and had commenced to form heads.® 



As with the beet and cherry, the exact time the injury occurred 

 is unknown. It occurred some time during the last ten days of 

 August. Although the rainfall for August in this section was 



5 The Montmorency grown at Geneva is Montmorency Ordinaire. 



6 Cauliflower was not generally heading at this date, September 7. 



