402 THE CANADIAN NATURALIST. [Oct. 



Nov-Eboracense (New-York Shield-fern). 



In wet rocky woods. Range same as last species, but appa- 

 rently not so common. 



spinulosum (Common Shield-fern). 



In woods. One of our most variable ferns ; generally dis- 

 tributed, and very common. 



cristatum (Crested Shield-fern). 



In wet woods. As generally distributed, but not so 

 common as the last species. Somewhat variable. 

 Goldianum (Goldie's Shield fern). 



In rich woods. A stately fern ; generally distributed from 

 Montreal westwards, but not common. Slightly 

 variable, 

 marginale {Marginal Shield-fern). 



In rocky woods. General and very common. A variable 

 fern. 



fragrans {Sweet-scented Shield-fern). 



In clefts of rocks, &c. Kamouraska to Lake Superior and 

 northwards ; occurs sparingly as far south as 45° 

 (Rigaud mountain, near Montreal; also Falls of the 

 St. Croix, U. S., vide Gray's Manual).' 



aculeatum (Prickly Shield-fern'). 



In rich mountainous woods. Northern shore of Lake 

 Huron (Abbe Brunet) to Kamouraska, eastward and 

 northwards ; not common. The North American form 

 is var. Braunii of Gray. 



acrostichoides (Terminal Shield-fern). 



In rocky woods. Varies by having its pinnae more or less 

 incised. General, and usually common. 



Lonchitis (Rough Shield-fern). 



On limestone rocks at Owen Sound in 1857 ; Rev. Prof. 

 Hincks of University College, Toronto. Since found 

 in several adjacent localities. Varies as the pre- 

 ceeding species. 



■ m This interesting fern was this year found in some abundance by Dr. 

 Thorr.as at Rivere-du-Loup, and by myself near the River Saguenay, 

 where it was sometimes very luxuriant, having fronds fifteen inches 

 long ; perfectly fruiting fronds from one to two inches long were not 

 uncommon ; five to ten inches was the average size. It is the Polypodium 

 fragrans of Linn., and is distantly allied to the Aspidium rigidum of 

 Europe. It was most probably this fern Prush bad in view for his 

 Aspidium rufidalum, — his synonym Nephrodium rufidulum Michx. (which 

 = Woodsia Ilvensis (Linn.) of Gray's Manual) being a manifest error. 



