1864.] LAWSON ON CANADIAN FERNS. 283 



Woods, Brigliton, J. Macoun ; Augusta, Robert Jardine, B.A. ; 

 about Montreal, Mr. Groldie in Hook. Fl. Bor. Amer. London, 

 W. Saunders, This fine fern was appropriately named by Sir 

 William Hooker in honor of its discoverer, a successful investi- 

 gator of Canadian botany, now resident at Paris, C. W. The 

 species belongs exclusively to the American continent. In Canada 

 we have two sub-varieties: — 



a. serrata^ in which the divisions of the pinnae are coarsely 

 serrate. Montreal. 



^. infegerrima, in which the divisions of the pinnae are almost 

 or quite entire. Farmersville. 



L. fragrans, Moore. — Frond 8 to 12 inches long, coriaceous, 

 bipinnate, pinnae triangular, of few (4 or 5 pairs) of pinnules, 

 which are crowded and covered beneath by the large rusty mem- 

 branous indusia, which conceal the sori. Rachis with profuse, 

 large, palish scales, especially near the base. Aspidium fragrans, 

 Swartz, A. Gray. — Bocks, Penokee Iron Bidge, Lake Superior, 

 Mr. Lapham, and north-west — Professor Wood, in Class-Book; 

 shaded trap rocks. Falls of the St. Croix, Wisconsin, Dr. Parry, 

 and high northward, Grray's Manual. I have not yet seen Cana- 

 dian specimens of this species, which is quite a northern fern, 

 stretchino; al >n2: the northern shores of the Russian Artie domi- 

 nions. I have specimens from Bepulse Bay, collected by Captain. 

 Rae's party while wintering there in 1855. This plant does not 

 appear to be in cultivation in any European garden. 



Ij. Theh/pteris, Presl. — Frond erect, lanceolate, mostly broad 

 at base, and narrowed upwards, chin, and herbaceous, or slightly 

 coriaceous, glabrous or downy, pinnate; pinnae linear, rather 

 distant, deeply pinnatifid ; pinnules with revolute margins, veins 

 forked, sori near their middle, becoming confluent. Stipe as long 

 as, or longer than, the frond, and naked. Lastrea TheJyjyteris. 

 Presl, Moore, J. Sm. Aspidlum Thtlypteris, Swartz, E. B. 

 Willd., Piirsh, Bigelow, Beck, Darlington, Torr y Fl. N. Y. ii, p. 

 596, A, Gray, Man. Polypodium Thel/jjJteris, Linn. Dryop- 

 teris Thdypterh, Gray. — Swamps in the woods, townships of 

 Hinchinbrook, Portland, Ernestown, &c. ; Millgrove Marsh, 

 Hamilton, Judge Logic; Gatineau Mills on the Ottawa, D. 

 M'Gillivray, M.D. ; Prescott, common, B. Billings, jun. ; Temis- 

 couata, Thorold and Maiden, P. W. Maclagan, M.D. ; Belleville, 

 very common in swamps, J. Macoan; Ramsay, Rev. J. K. M'Mo- 

 rine, M.A. ; portage to Bark Lake, and on lumber-road through 



