18G4.] LAWSON ON CANADIAN FERNS. 281 



dark-centred scales, so common in Scotland, I have not yet seen 

 growing in the Canadian woods; but a fragment, the upper 

 portion of a frond, from Point Rich, Newfoundland, James 

 Kichardson, looks like it. 



L. margiiiaUs, J. Smih. — Frond ovate oblong, a foot, more or 

 less, in length, bipinnate, pale green, somewhat coriaceous, lasting 

 the winter ; pinnae linear-lanceolate, broad at bise ; pinnules 

 oblonv, very obtuse, obsoletely incised; sori marginal; stipe of a 

 pale cinnamon color when old, with large thin pale scales profuse 

 below. L. marglnaUs, J. Sm., Aspidiimi marginale, Swartz, 

 Pursh, Bigelow, Beck, Darlington, Gray, Eaton, Lowe's Ferns, 

 vol. vi, pi. 6 (a bad figure), Torrey Fl. N. Y. ii, p. 495. Po?y- 

 podium margimde, Linn. Nephrodtum marginale, Michaux. — 

 This species is as common in the Canadian woods as Lastrea Filix- 

 mas is in those of Britain ; woods around Kingston, abundant ; 

 near Odessa ; Newboro-on-the Rideau ; along the course of the 

 Grananoque River and lakes, in various places ; very fine at Mar- 

 ble Rock ; Farmersville ; Hardwood Creek ; Valley of the Trent, 

 found on the great boulder, &c. ; on Judge Malloch's farm and 

 elsewhere about Brockville ; on limestone rocks above the Rapids 

 at Shaw's Mill, Lakefield, North Douro, Mrs. Traill ; Sulphur 

 Spring, Hamilton, Judge Logic ; Cedar Island, A. T. Drum- 

 mond, jun., B.A. ; Smith's Falls, and Chippawa, P. W. Maclagan, 

 M.D. ; Ramsay, Rev. J. K. M'Morine, M.A. ; Prescott, common, 

 B. Billings, jun.; Belleville, in rich low moist woods, common, J. 

 Macoun ; above Blacklead Falls, W. S. M. D'Urban ; Gatineau 

 Mills, D. M'Gillivray, M.D. ; Cape Tourmente, Abbe Pro- 

 vancher ; Harrington, J. Bell, B A. ; London, W. Saunders. 

 This is exclusively an American fern. It varies in size and 

 appearance ; in some specimens the pinnae are wide apart, their 

 divisions small and narrow; in others, the pinnae overlap each 

 other, and their divisions are broad and leafy, also overlapping, 

 and in such forms they are usually toothed into rounded lobes. 

 Mr. Macoun sends a form from Belleville, more deeply serrate 

 than usual. 



f^- Trdllce.— Fronds very large (3| feet long), bipinnate, all 

 the pinnules pinnatifid.— Lakefield, North Douro, Jlrs. Traill. 

 This is a very handsome variety, and would form an attractive 

 plant in cultivation. It has the same relation to the type of L, 

 marglnaUs which L. iiicisa {erosa) has to typical Filix-mas. 



