112 Synopsis of Canadian Ferns and Filicoid Plants. 



have not seen the plant. It is referred by Sir William Hooker to 

 Allosorus crispus (A. Gr. in Enum. of Dr Parry's Eky. Mtn. Plants). 

 Cryptogramma acrost'choidcs, R. Br., Moore. Allosorus acrostichoides, 

 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. Brtuioniana, 

 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, v^ith revolute contracted divisions, v^^holly covered 

 on the back by sporangia. A very graceful fern, well suited for cultiva- 

 tion in gardens. Struthiopteris pennsylvanica, AVilld., Pursh, J. Sm. 

 Cat. S. germanica, Hooker, Torrey Fl. N. Y. ii. p. 486, Gray. Os- 

 munda Struthiopteris, Linn. ; Onoclea Struthiopteris, Schkr. ; Onoclea 

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

 Micbx., 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, jr. ; low rich grounds, Belleville, abundant 

 along Cold Creek, J. Macoun ; Re-we-naw Point, Lake Superior, in 

 low ground, at times under water, R. Bell, jr. ; Ramsay, Rev. J. K. 

 M'Morine, M.A. ; near Lakefield, North Douro, Mrs Traill; field 

 beyond Waterdown, Hamilton, Judge Logic ; Osnabruck and Prescott 

 Junction, Rev. E. M. Epstein; near Montreal, W. S. M. D 'Urban ; 

 Assiniboine River, John C. Schaltz, M.D. ; Canada, to the Saskatchewan, 

 Hook. Fl. Bor. A. ; Pied du Tourmente, M. L'Abbe Provancher. This 

 is the commonest plant in the Bedford Swamps ; Gaspe and L'Orignal, 

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

 New York State, but rare according to Torrey. 



Onoclea, 



0. sensibilis, Linn.-— Rhizome creeping ; barren frond broad, leafy, 

 deeply pinnatifid ; fertile ones erect, spicate, contracted, doubly pinnate, 

 with small revolute pinnules, enclosing the sporangia, not at all leafy, 

 Onoclea sensibilis, Linn., A. Gr., J. Sm., &c. Lowe's Ferns, vol. vi. 

 pi. 1. — In woods along the banks of the Little Cataraqui Creek in great 

 abundance, and in moist swampy places in the woods in various other 

 places about Kingston ; west end of Loborough Lake ; Becancour, M. 

 L'Abbe Provancher ; London, W. Saunders ; common in marshy ground 

 at Hamilton, Judge Logic ; Lakefield, North Douro, Mrs Traill ; St 

 John's, C. E., Niagara and Maiden, P. W. Maclagan, M.D. ; Belle- 

 ville, in low marshy places, abundant, J. Macoun ; Ramsay, Rev. J. K. 

 M'Morine, M.A. ; Amagos Creek, Lake Superior, R. Bell, jr. ; Prescott, 

 common, B. Billings, jr. ; on the river shore, Gatineau Mills, D. 

 M'Gillivray, M.D. ; L'Anse au Cousin, Gasp^ and L'Orignal, J. Bell ; 

 Nova Scotia. This curious fern has been cultivated in England since 



