1864.] M'CORD ON CANADIAN FERNS. 361 



with B. ohliquum, but not in the barren frond, which, although bi- 

 pinnate, has not narrower divisions. They are simply more 

 coarsely crenate and more coriaceous. This may of course be not 

 at all B. ohliquum of Dr. Lawson, and I had regarded it as 

 a variety of the B. lunarioides. I can add nothing further, as I 

 have not seen many specimens of this fern. I have a variety of 

 it collected at Lake Memphramagog, C E., in 1862, by Mrs. 

 J. H. Thompson, which would be in the same relation to B. 

 lunarioides that the variety y. simplex is to B. Virginicuni. The 

 sterile branch is almost twice pinnate, with few wedge-shaped 

 minutely-toothed lobes ; the fertile branch is also almost or entirely 

 twice pinnate : but the whole specimen has this peculiarity, that 

 instead of there being three barren branchlets, and one fertile, 

 there are three fertile and one barren. 



BoTRYCHiuM LuNARiA. — North side of Island of Orleans, 

 J. F. Whiteaves, F.G.S. ; and Riviere du Loup en bas. 



Ophioglossum vulgatum. — Melbourne, C. E., where exceed- 

 ingly fine specimens are to be found. Miss Isabella Mcintosh, Burn- 

 side House, Montreal. This fern, with the Botrycliium Luiiaria 

 mentioned above, are now for the first time recorded as being 

 natives of Canada proper. 



The above brief statement of the Lower Canadian ferns, intended 

 as a supplement to Dr. Lawson's valuable paper, includes thirty- 

 seven species, to which, if we add the six additional ones which 

 are as yet peculiar to Upper Canada, we have a total of forty- 

 three species of Canadian ferns. I enumerate the six above 

 alluded to. 



Pell^a atropurpurea, Link. 



Cryptogramma acrostichoides, R. Brown. 



AsPLENiuM ebeneum, Aitou. 



WooDWARDiA ViRGiNiCA, Willdcnow. 



SCOLOPENDRIUM VULGARE, Smith. 

 POLYSTICHUM LONCHITIS, Roth. 



There are, then, in Canada almost as many species of ferns as 

 in Great Britain, and much is yet left for observation, particularly 

 in Lower Canada, — where other species may, perhaps, be dis- 

 covered ; and we have also the investigation of varieties to in- 

 terest us. 



There are forty-nine species mentioned by Gray as being in the 

 northern United States ; and of these a good number, as Lygodium 

 jpalmatum, Swartz, Schizaea 2^usilla^ Pursh, and others, are not 



