THE CAYUGA FLORA. xxvii 



of Pine Plains, Dutchess Co., N. Y;" by Dr. L. H. Hoysradt, 1875. 

 4. ''Plants 0/ Suffolk Co., L. /.;" by E. S. Miller and H. W. Young, 

 1874. Of these, the most suitable for comparison are the last three, 

 as they represent definitely outlined regions ; the Buffalo list and the 

 Suffolk Co. list covering, of course, territorsies having very marked 

 characters. The other catalogues selected are Ward's "Flora of 

 Washington and vicinity" 1881 ; Robinson's "Flora of Essex Co., 

 Mass.,''' 1 1880 ; and the " Catalogue of Plants growing within thirty 

 miles of Yale College," 1878. In all cases the total numbers given 

 below refer to Phsenogamia only. In comparing our own list with 

 the others mentioned, it may be safely said that the comparison is as 

 fair as such things can be in the present state of our knowledge. The 

 area covered — about sixty-five miles in length by an average of 

 eighteen in breadth — is equal to the average of those in table below. 

 There are no true mountains within the limits of any, although the 

 interesting little Flora of Pine Plains includes some of the spurs of 

 the Tacouic range. On the other hand, that Flora has no true sa- 

 line or shore plants such as most df the others possess. It has, how- 

 ever, a curious mixture of the plants of the cold marshes and moun- 

 tain-slopes of the north and those of the Atlantic coast. 



Catalogue. 



Total species and 

 varieties. 



The Cayuga Flora 



Plants of Buffalo, etc., (with addend.) 



Plants of Suffolk Co 



1278 

 1277 

 1390 

 1067 

 852 

 1211 

 1257 

 1238 



Flora of Washington, etc 



Flora of Essex Co -. 



Flora of Vicinity of Yale College, . . 



It should be stated in regard to the latter list, that it does not in- 

 clude among its numbers the varieties mentioned in the body of the 

 work. Although a greater or less number of new discoveries have 

 been added to most of the above lists since their publication, no ac- 

 count is taken of such, excepting in the case of Buffalo Catalogue, 

 the facts not being accessible. 



It will also be interesting to compare two of the larger genera, two 

 of the representative Atlantic coast genera and a representative north- 

 ern genus, in respect to the abundance of species in different sections. 



Genus. 



Carex, 



Aster, 



Eupatorium, . . . 

 Utricularia, . . . 

 Habenaria, . . 

 (incl. Perularia. 



Floras with the number of species and 

 varieties in each. 



112 



24 

 4 

 4 



12 



ta 



24 

 3 

 3 



10 



130 

 29 



6 



6 



16 



102 

 20 



33 



20 



10 



9 



3 



70 



21 



12 



2 



4 



