1864.] M'CORD on CANADIAN FERNS. 355 



PoLYPODiUM Dryopteris. — Rliizoma black, few rooted. Mon- 

 treal, not fine ; Waterloo ; Lennoxville, very fine ; Chatliam ; Dur- 

 ham, Wickham, and Melbourne, John A. Both well, B.A. ; Quebec, 

 Hon. William Sheppard ; Temiscouata, common, J. G. Thomas, 

 M.D. White Mountains, New Hampshire. 



(i. erectum. — I have a specimen which appears to correspond 

 with this variety, fifteen inches high and nine inches broad, but its 

 size is the chief difierence I can detect between it and the normal 

 smaller specimens. The pinnae are however more deeply pin- 

 natifid, and, in the case of the lowest ones, almost pinnate. 

 Waterloo, June 6, 1862. 



PoLYPODiUM EoBERTiANUM. — Sorel, Lady Dalhousie. 



Adiantum pedatum. — When it first appears in spring, in the 

 early part of May, the stipe is covered with thick chaiFy scales, 

 and the frond circinate ; the scales soon disappear, and in a week or 

 two the stipe is at full height. Common almost everywhere in 

 Lower Canada. Montreal; Lennoxville; Waterloo; Chatham; 

 Sorel, Lady Dalhousie; Quebec, Hon. William Sheppard; Dur- 

 ham, Wickham and Melbourne, John A. Bothwell, B.A. White 

 Mountains, New Hampshire. 



Var. triangidare. — From Chatham, where a large clump 

 grew. Very deep green, fewer pinnae (branches) than normal, 

 and fewer pinnules; these more deeply pinnatifid, sometimes 

 divided half way to the midrib at back. Instead of the common 

 oblong-shaped pinnules, this variety displays a triangular form, 

 and the whole aspect is in a measure difierent. 



Pteris aquilina. — Common everywhere in Lower Canada. 

 Montreal; Waterloo; Chatham; Lennoxville; Durham, Wick- 

 ham, and Melbourne, John A. Bothwell, B.A. ; Temiscouata, 

 J. G. Thomas, M.D. ; Sorel, Lady Dalhousie. White Mountains, 

 New Hampshire ; Portland, Maine. 



The varieties of this fern are very numerous. Vars. a. vera 

 and (3. integerrima. I have collected specimens of both these 

 varieties, though they do not adhere exactly to Dr. Lawson's 

 descriptions of them. I have also one or two beautiful specimens 

 of another variety, with a brown stripe of six and a half inches in 

 length, surmounted by the frond, which is three inches high, and 

 three and a half broad. The branches are pinnate, the pinnae 

 pinnatifid and very clearly divided. The specimens were min- 

 utely chafiy-hairy and in fruit. Now the vars a. vera and p. 

 integerrima are of large size, and not so thick or coriaceous, though 



