Synopsis of Canodian Ferns and Filicoid Planfs. 277 



pinna} triangular, of few (4 or 5 pairs) of pinnules, which are crowded 

 and covered beneath by the large rusty membranous indusia, which con- 

 ceal the sori. Rachis with profuse, large, palish scales, especially near 

 the base. Aspidium frag vans, Swartz, A. Gray, — Rocks, Penokee Iron 

 Ridge, Lake Superior, Mr Lapham, and north-west — Professor Woods, in 

 Class-Book ; shaded trap rocks, Falls of the St Croix, Wisconsin, Dr 

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

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

 along the northern shores of the Pacific to the Russian Arctic dominions. 

 I have specimens from Repulse Bay, collected by Captain Rae's party 

 while Avintering there in 1855. This plant does not appear to be in 

 cultivation in any European garden. 



L. Thelypteris, Presl. — Frond erect, lanceolate, mostly broad at base, 

 and narrowed upwards, thin, and herbaceous, or slightly coriaceous, gla- 

 brous 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 Thelyjjterisj Presl, Moore, J. Sm. Aspidium The- 

 lypteris, Swartz, E. B. Willd., Pursh, Bigelow, Beck, Darlington, Tor- 

 rey Fl. N Y. ii. p. 496, A. Gray, Man. Polypodium Thelypteris, 

 Linn. Dryopteris Thelypteris, A. Gr. — Swamps in the woods. Town- 

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

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

 MD.; Prescott. common, B. Billing, jr.; Temiscouatii, Thorold and 

 Maiden, P. W. Maclagan, M D. ; Belleville, very common in swamps, 

 J. Macoun ; Ramsay, Rev. J. K. M'Morine, M.A. ; portage to Bark 

 Lake, and on lumber road through the woods east from Hamilton's 

 Farm, W. S. M. D'Urban ; Montreal, Drs Maclagan and Epstein ; Hud- 

 son's Bay Territories near Red River Settlement, Governor M'Tavish ; 

 St Joachim, M. L'Abbe Provancher ; L'Orignal, J, Bell, B.A. ; London, 

 W. Saunders. In the State of New York this species is common in 

 swamps and wet thickets ^Torrey). I have it from West Point, N. Y. 

 In the south, Eaton indicates Florida and northward. Very seldom 

 found with fructification (Pursh). Fertile specimens are not rare with us. 

 The forked veins of the pinnules distinguish this species from the next. 

 In the Canadian plant the outline of the frond is a little diflferent from 

 Scotch and Irish specimens, being less narrowed at base. There are 

 three forms of this species in Canada. The first (a) seems to be the 

 plant of Gray's Manual, the second is more like the L. Thelypteris 

 of Europe, and the third {y) is intermediate between this species and the 

 next. 



a. puhescens. — Frond somewhat coriaceous, densely pubescent or 

 downy throughout. Odessa, Hudson's Bay, &c. 



{3. glabra. — Frond thin, herbaceous, glabrous. Montreal, Chelsea, 

 Hinchinbrook, &c. 



y. intermedia. — Frond narrowed below, glabrous ; stipe slightly elon- 

 gated (veins forked). Gaspe, J. Bell, B.A. 



L. Nov-Eboracends. — Frond lanceolate, narrow at the base, thin and 

 herbaceous, pinnate ; pinnse linear or linear-lanceolate, more or less 

 approximate, deeply pinnatifid ; pinnules oblong, usually flat ; veins 



NEW SERIES. VOL. XfX. NO H. -APRIL 1864. 2 N 



