THE VEGETATION OF MONTAUK IO7 



Generic coefficient 



Flora of Long Island* 35-0 



Flora of the Vicinity of New York 31.3 



Connecticut Flora 31.9 



New Jersey Pine-barrens 45.0 



which should be contrasted with 



Montauk 52.6 



Perhaps better than any other statistical method of studying a flora this 

 Jaccardian generic coefficient reflects the uniformity of Montauk conditions 

 and the efi^ect upon the flora of that consistent topography and climate. 

 As compared to the total flora of the vicinity of New York with 31.3%, 

 and the Flora of Long Island with 35.0%, the 52.6% generic coefficient of 

 Montauk is noteworthy as an expression by the flora of the relative eco- 

 logical diversity of the larger areas, as compared to the relative uniformity 

 of the smaller one. 



* Based on the manuscript "Flora of Long Island," and doubtless not quite complete, 

 but there is little evidence that additions will change the percentage more than a point or 

 two. 



