280 THE CANADIAN NATURALIST. [Aug. 



Ot awa and Prescott Kailway, upon a rock slightly covered with 

 mould, B. Bil ings, jnn. ; mountain-side west from Hamilton, also 

 at Ancaster and at Lake Medad, Judge Looie; Wolfe Island, E. 

 J. Fox; not rare about Owen Sound, Rev. Prof W. Hincks; 

 Montreal Mountain, Abbe Provancher; rather northern in its 

 range in North America, but not common anywhere in Canada. 

 This curious fern has been long in cultivation in the botanic 

 gardens of Europe. 



Lastrea. 



L. dilatataj Presl. — Fronds spreading, broadly lanceolate, 

 rather pale but vivid green, bipinmte; the pinnules pinnate or 

 pinnatiiid with pointed lobes ; on the lower pinnae the posterior 

 pinnules are longer than the anterior ones; stipe with rather 

 distant pale unicolorus scales ; sori small. This description refers 

 only to the commonest form in Canada. It is a very variable 

 species. AspicUum spijudosum, Gray. — Abundant in the woods 

 about Kingston, as Collins's Bay, &c.. Smith's Falls, Odessa, 

 woods near the Falls of Niagara, Hiuchinbrook, Gananoque lakes, 

 Farmersville, Hardwood Creek, Delta, Upper Rideau Lake, New- 

 boro-on-the-Eideau, Longpoint; Mouth of the Awaganissis Brook, 

 Gulf of St. Lawrence, Goulais River, also Grand Island, and at 

 Ke-we-naw Point, Lake Superior, R. Bell, jun. ; Ramsay, Rev. J. 

 K. M'Morine, M.A. ; Prescott, very common. B. Billings, jun. ; 

 St. John's, St. Valentine, and Belceil, P. W. Maclagan, M.D. ; 

 Belleville, very common, J. Macoun ; St. Foy Woods, W. S. M. 

 D'Urban; Daniel's Harbor, Newfoun Hand, James Richardson 

 (a peculiar form) ; Peche River, Chelsea and Cantley, Hull, D. 

 M'Gillivray, M. D. Of varieties referable to var. Boottii, Gray, 

 var. dumetorum^ Gray, or others, differing from the common 

 (which, howover, is perhaps not the typical) form, I have seen 

 specimens from, or obtained information of their having been 

 collected in, the following localities :— Maiden, Brighton, Point 

 Rich, Newfoundland, Hamilton's Farm, Murray, Hamilton, &c. 

 These varieties still require careful study, with a view to their 

 idenification with European forms, which are now well understood. 



/5- tanacetifolia. — Frond large and very broad, triangular, 

 tripinnate, with the pinnules pinnatifid or deeply incised, lobed. 

 P. tanacetifoHum, DC. ? — Pointe des Morts, Gaspe, John Bell, 

 Mr. Bell's specimen seems to agree well with Mr. Moore's 

 description of var. tanacetifolia. The typical Z. dilatata, with 



