404 the canadian naturalist. 



Lycopodifm 



dendroideum (Ground- Pine). 



In woods ; general, and not uncommon, 

 clavatum (Common Club-moss). 



In moist woods; general; very common eastward — 

 apparently less, so westward. 



complanatum (Festoon Ground-Pine). 



In woods. A variable plant ; very general, and not 

 uncommon. 



Selaginella 



selaginoides (Prickly Club-moss). 



Lake Superior, Agassiz ; Swan Lake and northward 

 Michaux ; Anticosti, Abbs' Brunet. 



rupestris (Roch Club-moss). 



On dry cliffs. General and sometimes rather common, 

 apus (Moss-lilce Selaginella). 



On moist shady ground. General in Western Canada, 

 and in some localities plentiful. 

 ISOETES 



lacustris ? (Quillwort). 



Grows profusely on bottom of muddy shallow ponds and 



sluggish streams ; seemingly general ; apparently 



rare, but probably overlooked. 



Editor's note. — In the foregoing catalogue an attempt has been made 



to indicate the local distribution of Canadian ferns so far as at present 



known to me. Some of the species may hereafter prove to have a much 



wider range than is here accorded to them. Numerous localities are 



given in detail in the last volume of this Journal,— by Dr. Lawson, at 



page 262, and by Mr. McCord, at page 354. Descriptions of such as are 



not in Gray's Manual will be found in Dr. Lawson's article. 



I have been unable to authenticate the occurrence of Polypodium 

 Robertianum or of Asplenium marinum in any part of North America. 

 Aspidium Filix-mas and Asplenium septentrionale have been found on the 

 Rocky Mountains, and are to be looked for in Canada; Asphnium Ruta- 

 muraria, Lygodium palmalum, Botrychum lanceolatum, Lycopodium Selago, 

 Azolla Caroliniana and Marsilea mucronata are also to be looked for, as 

 they occur close to our southern borders. D. A. Watt. 



Montreal, October, 1865. 



