1870.] BOTANY A.'^D ZOOLOGY. 345 



the two species which are marked) are also known to occur oa 



the mountains themselves ; these are, — 



"Woodsia Oregana, Agpidium aculeatiun, 



Cjstea fragilis, Xephrodium Filix-iuas, 



Adiantum pedatum 1 fragrans, 



Ciyptogvamme crispa, spiuulosum, 



Pell?ea atropurpurea, Polypodium viilgare, 



Pteris aquilina, Phegopteris, 



Asplenium viride, Diyopteris, 



Trichomanes I Botrychiuni Liinaria, 



Filix-fcemina, ternatum, and 



Aspidiuui Lonchitis, virginianum. 



On the east side ot the Rocky Mountains, but apparently not 



extending as far west as the mountains, are twenty- three species, 

 as follows, — 



Ouoclea sensibilis, Scolopendrium rhizophylluni, 



Struthiopteris, Nephrodium Thelypteris, 



"Woodsia glabella, is'oveboracense, 



hyperborea, Goldieauum, 



Dicksouia punctilobula» Polypodium hexagonopteram, 



Cystea bulbifera, Osmunda regalis, 



Pellaea gracilis, Claytoniaua, 



AVoodwardia Yirginica, ciunamomea, 



Asplenium ebeneum, Botrycliium simplex, 

 augustifolium, matricaria'folium, and 



' thelypteroides, Ophioglossum vulgatum. 



Scolopendrium vulgare. 



The remaining six species of this area are found on the Rocky 

 mountains, all of them (except Ch. gracilis which is not known 

 east of Illinois) also extending eastward to the Atlantic ; they are, 



Cheilanthes gracilis, Aspidium acrostichoides, 

 C^'stea montana, iSTephrodium cristatum, and 

 AVoodsia Ilveusis, marginale ; 



making forty-nine species indigenous to that portion of British 

 America to the east of the Rocky mountains. From the moun- 

 tains westward to the Pacific we have but eleven other species 

 which may be noted here. They are, 



— On the Rocky Mountains and westward, 

 Woodsia scopuHna, Polypodium alpestre. 



— On the West Coast, but not extending as far east as the 

 Rocky Mountains, 

 TToodsia obtusa,* Cheilanthes gracillima. 



* It is somewhat singular that this species which is common throughout 

 Prof. Chapman's and Dr. Gray's limits, coming right up to our borders 



