104 • BROOKLYN BOTANIC GARDEN MEMOIRS 



Lactuca sagittifolia. Gin Beach. V R. 



Hieracium Gronovii. Downs; R C. 



Hieracium marianum. Downs; C. 



Hieracium scabrum. Downs; C. 



Hieracium venosum. Downs and in dry wooded kettleholes; V C. 



Nahalus serpentarius . Point Woods; R R. 



Nabalus trijoliolatus. Hither Woods ; CuUoden Point ; Montauk Point ; R R. 



The list enumerates 495 species contained in 261 genera which may be 

 grouped as follows: 



Genera Species 



Ferns and fern allies 11 18 



Gymnosperms 2 2 

 Angiosperms 



Monocotyledons 59 147 



Dicotyledons 189 328 



Totals 261 495 



While these 495 species undoubtedly make up the great bulk of the 

 flora of Montauk, 227 of them are either "common," "rather common" 

 or "very common," and it is these elements which constitute the major 

 features of the vegetation of the point. As shown elsewhere, and as a check 

 of the foregoing list will verify, a trifle over 65 species are "very common" 

 and it is these that give characteristic vegetative covering to great stretches 

 of the Downs and wooded kettleholes. 



Some years ago the Raunkiaer "growth-form" scheme of sorting species 

 into difl^erent categories, according as they are suited to carry over their 

 unfavorable season, was applied to the writer's "Flora of the Vicinity of 

 New York," and to the 400 commonest species of the general flora of Long 

 Island.* 



At that time the opinion was expressed that the scheme did not satis- 

 factorily indicate the response of either the total flora or of the four hundred 

 commonest species of Long Island to the climate. It was hoped that in 

 such a specialized region as Montauk the sorting would give us better 

 results. The following table shows how far short Raunkiaer's scheme 

 comes of reflecting the climatic conditions there. The percentages are as 

 follows: 



* Am. Jour. Bot. 2: 23-31. 1915. Mem. Brooklyn Bot. Gard. 1: 486-491. 1918. 

 The details of Raunkiaer's growth-forms are given there, and will not be repeated here. 



