1870.] BOTANY AND ZOOLOGY. 317 



giving her authority and probably in error. Not one of these 

 twelve species is peculiar to America ; none of them are likely 

 to have come from America unless Aspidiiim fragrans, a non- 

 European plant wide-spread in north Asia. 



Turning to Mrs. Lyell's second area, the United States east 

 of the Rocky Mountains and north of Mexico, we find that the 

 admitted species number seventy-eight, of which these four have 

 probably been inserted in error : — 

 Cjstea montana(the Rocky Moun- 

 tains habitat of which is north 

 of K lat. 49^), 

 Pellrea densa (*' Washington " Ter- 

 ritory being on the west side), 



A good many species should be added which may be conve- 

 niently divided into various groups: — 



A. Species which occur on the Kocky Mountains, but not as 

 far north as lat. 49o — 



Cheilanthcs gracillima, and 

 "Woodsia scopuHna (neither of 



which occur on the east side 



of the mountains). 



Cheilanthes Fendleri, 

 Asplenium Septentrionale, 



Xcthochlaina Fendleri, 

 dealbata : — 



[These four species added to the twenty-eight above noted, gives 

 thirty-two species as the fern flora of the Rocky Mountains.] 



B. Species which occur on both sides of the mountains (Cali- 

 fornia, Arizona or New Mexico, and Texas) — 



Pellsea Wrightiana, Xothoclajua sulphurea (Mr. Baker's 



mucronata, species is probably too com. 



prehensive). 



C. Species w'hich have to be removed from the third area into 

 this — 



Xothochlfcna sinuata, 



ferruginea, 



Gymnogramme pedata, 

 Aneimia Mexicana. 



Cheilanthes "Wrightii, 



Lindheimeri, 



Pellffia aspera, 



pulchella, 



cordata, 



Aspidium juglandifulium, 



This division must be held to include the trans-Mississippi 

 States east and north of the Rio Grande, some of which (as Texas, 

 Missouri, etc.) Mrs. Lyeil erroneously quotes as belonging to her 

 third area. 



D. Two Eastern species are omitted, probably in error — Wood- 

 sia glabella (New York and northward); Woodsia hyperborea 

 (Vermont, H. Mann, and northward). 



These additions bring up the number of the known species 

 inhabiting this area, to ninety-four ; to which may be added 



