356 THE CANADIAN NATURALIST. fOct. 



they agree witli this variety in the number of branches and in 

 point of pinnatification. Whether specimens of this variety in a 

 sterile state would be less coriaceous, I am not in a position to say. 

 These last mentioned specimens were collected at Chatham on the 

 Ottawa, a locality rich in ferns; and I may also add, in phoe- 

 nogamous plants. T have also another variety of P. aquilina dis- 

 playing extremely lanceolate pointed pinnules ; but whether this 

 acuminate property be constant, I cannot now affirm. 



Allosorus gracilis. — Rare. Rocks, county of Prescott, C. 

 W. ; on the shore of River Ottawa, opposite the residence of Lem- 

 uel Gushing, Esq.; Chatham; Cacouna, very fine specimens, Dr. 

 J. W. Dawson ; Riviere du Loup (en has), J. G. Thomas, M.D. ; 

 near Britannia Mills, rare, Hon. William Sheppard ; Murray Bay, 

 R. Anstruther Ramsay, B.A. 



Struthiopteris Germanica. — Very common. Among other 

 localities : — Montreal ; Waterloo ; Lennoxville ; Chatham ; Sorel, 

 Lady Dalhousie; Quebec, Hon. William Sheppard; Durham, 

 Wickham, and Melbourne, John A. Bothwell, B.A. ; along the 

 Green River, J. G. Thomas, M.D. White Mountains, New 

 Hampshire. 



Onoclea sensibilis. — A very variable and interesting fern. Of 

 many barren specimens some are deeply pinnatilid, which appears 

 the normal state, or with the last pair of divisions almost pinnate ; 

 but in every case that I have yet observed there is a wing, however 

 minute, upon the rachis, so that we cannot properly apply the 

 term pinnate to this fern. I have several sterile varieties, one 

 covered with glands, another in which the properties of the sterile 

 and fertile are seen in the same frond, as may be observed in pin- 

 nules of Osmunda regalis, var. spectahilis. Some are contracted and 

 deeply pinnatifid ; one obtusely terminated at apex and at ends of 

 divisions. Whether these would be constant under cultivation I can- 

 not say, as I have not had time to investigate this fern sufficiently, 

 and have only mentioned these varieties as a stimulus to observa- 

 tion. On the whole it would appear that from the earliest develop- 

 ment of Onoclea there are two general forms. One from the mul- 

 tiplication of wavy-toothed divisions, the other by the development 

 of lanceolate-triangular divisions; under these may be included 

 all the abnormal forms which I have seen. Common. Montreal j 

 Sorel, Lady Dalhousie ; Waterloo ; Chatham ; Lennoxville ; Que- 

 bec, Hon. William Sheppard ; Durham, Wickham, and Mel- 

 bourne, John A. Bothwell, B.A. ; Temiscouata, J.G. Thomas,M.D.; 

 White Mountains, New Hampshire ; Portland, Maine. 



