1864.] LAWSON ON CANADIAN FERNS. 289 



tially pinnate. Dartmouth River, Gasp^, John Bell, B.A. In 

 technical characters, this form agrees better with TT^. aljjina 

 (Jiyperhorea) , but it has quite a different aspect. 



W. aljnna, S. F. Gray. — Frond small (from one to two or three 

 inches long), broadly linear, pinnate, somewhat hairy without dis- 

 tinct scales ; pinnae ovate, somewhat triangular, obtuse, pinnatiSdly 

 divided into roundish lobes. Wo'jchia alpina, S. F. Gray, Brit. 

 PI., Moore. Woodsia liyperhorea, K. Br. in Linn. Trans., vol. xi ; 

 Pursh, Fl. Am. Sept. ii, 660. — In the clefts of rocks, Canada, 

 Pursh ; Canada to the Saskatchewan, Hooker. Noticed in 

 Dr. Hooker's Table of Arctic Plants as a Canadian species that 

 does not extend into the American States. 



W. glahella^^.^w — Frond a few (2-4) inches long, linear, 

 bright green and glabrous on both sides, simply pinnate; the pin- 

 nae short, rounded or rhombic, cut into rounded or wedged lobes. 

 Stipe with a few scales at the base only. Woodsia glabella, B. 

 Br., Hook. Fl. Bor. Amer., tab. 237 ; Gray. Canada, Prof. 

 Wood in Class Book. Sir W. Hooker, in the Fl. Bor. Amer., 

 gave Great Bear Lake as the only station then known for W. gla- 

 hclla. Mr. D. C. Heaton has kindly furnished me with speci- 

 mens from Willoughby Lake, Vermont (Goodale leg."*, and Pro- 

 fessor Gray notices its occurrence on rocks at Little Falls, New 

 York (Vasey), and " high northward." 



(3, Belli. — Frond larger (6-7 inches long) ; pinnae more elong- 

 ated, pinnatifidly incised in rounded lobes (bright green, glabrous). 

 Gaspe, on the Dartmouth Biver, twenty miles from its mouth, 

 John Bell, B.A. 



W. ohtusa, Torrey. — Frond nearly a foot long, linear-lanceolate- 

 glandulose, bipiunate ; pinnules slightly decurrent, oblong, obtuse, 

 crenate, or somewhat pinnatifid ; indusium large, enveloping the 

 sorus, torn into a few marginal lobes ; stipe with few scattered, 

 pale, chaffy scales. Woodsia ohtusa, Torrey, A. Gray, J. Sm. 

 Aspidiam ohtusum, Willd. Phi/sematium ohtusum, Hook, Fl. 

 Bor. Amer. Woodsia Perrineana, Hook, and Grev. Ic. Fl. Foil/- 

 podinm ohtusum, Swartz. — An impression prevails that this plant, 

 which is said to be common in the Northern States, especially 

 towards the west, grows also in Canada. 3Ir. D. C. Eaton, in the 

 kindest manner, cut oat of his own herbarium a specimen for me, 

 from near High Bridge, New York city, in an excellent state for 

 examination, which has enabled me to understand the species, and 

 to ascertain that we have as yet no satisfactory evidence of its 



Vol. I. T No. 4. 



