1864.] lawson on canadian ferns. 273 



Cryptogramma. 



0. acrosfichoides, R. Br. — " Remarkable for its sporangia ex- 

 tending for down on the oblique veins, so as to form linear lines of 

 fruit.-" I have not seen the plant. It is referred by Sir William 

 Hooker to AUosoriis crispus(^A. Gr. in Enuni. of Dr. Parry's Rocky 

 Mt. Plants). Cryptogramma acrostichoides^^.^v., Moore. AUoso- 

 rus acroHichoides, A. Gr. — Isle Royale, Lake Superior. Placed 

 in Dr. Hooker's Table as a Canadian species that does not extend 

 into the United States. It has recently been found on the Rocky 

 Mountains. Allosorus crispus is general throughout Europe, and 

 occurs at Sitka, in North-West America. Mr. Moore observes that 

 the Eastern (Indian) species, A. Brunoniana, is very doubtfully 

 distinct from the European plant. 



Struthiopteris. 



>S^. Germanica var. /3 Pennsylvanica. — Rhizome stout, erect ; 

 fronds tufted ; sterile ones large pinnate, erect-spreading, deeply 

 pinnatifid ; the fertile ones erect, rigid, with revolute contracted 

 divisions, wholly covered on the back by sporangia. A very 

 graceful fern, well-suited for cultivation in gardens. Stnipthiop- 

 teris Fennsyhanica, Willd., Pursh, J. Sm. Cat. S. Germanica, 

 Hooker, Torrey Fl. N. Y., ii, p. 486, Gray. Osmunda Struthiop- 

 teris, Linn. ; Onoclea Struthioptterii^, Schkr. ; Onoclea nodulosa, 

 Schkr., according to Hooker. Torrey refers 0. nodulosa, Michx., 

 to Woodwardia angustifolia. — Frankville, Kitley ; Longpoint ; 

 Lansdowne; Hardwood Creek ; usually found along the margins 

 of creeks, &c. ; common in rich, wet woods near Prescott, and 

 abundant around Ottawa, B. Billings, jun. ; low rich grounds, Bel- 

 leville, abundant along Cold Creek, J. Macoun ; Ke-we-naw Point, 

 Lake Superior, in low ground, at times under water, R. Bell, jun. ; 

 Ramsay, Rev. J. K. M'Morine, M.A. ; near Lakefield, North 

 Douro, Mrs. Trail ; field beyond Waterd'wn, Hamilton, Judge 

 Logic ; Osnabruck and Prescott Junction, Rev. E. M. Epstein ; 

 near Montreal, W. S. M. D'Urban ; Assiniboine River, John C. 

 Schultz, M.D. ; Canada, to the Saskatchewan. Hook. Fl. Bor. 

 A. ; foot of Cape Tourmente, Abb(i Provancher. This is the com- 

 monest plant in the Bedford swamps ; Gaspe and L'Original, J. 

 Bell, B.A. ; London, W. Saunders. Found in the western part 

 of New York State, but rare, according to Torrey. 



Vol. I. S No. 4. 



