CAjAtOGHjB OF CANADIAN PLANTS. 271 



Is distinguiBhed from the type by its glandular stalks and fronds. 

 Abundant on ledges of limestone about two miles up tbe left bank of the 

 Becscie Eiver, Island of Anticosti, Que. (Macoun.) Not rare in low 

 woods at the base of limestone cliffs, and in crevices of the cliffs them- 

 selves, at the mouth of the Temiscami Eiver, Lake Mistassini, N. E. 

 Ter. (J. M. Macoun.) Lake of the Woods, Man. (Dawson.) About 

 one hundred miles north-east of Lake of the Woods, near Lonely 

 Lake (Lac Seul), Ont. (iJ. Bell.) 



(3001.) P. alpestris, Mett.,Kl. Hort. Lips., 83. Macoun & Burgess, 

 Trans. Eoy. Soc. Can., ii., sect, iv., 200. Burgess, Trans. Eoy. 

 Soc. Can., iv., sect, iv., 13. 



Polypodium alpestre, Hoppe; Spreng. Syst. Veg., iv., par. ii., 320. Hook. 



& Baker, Syn. Fil., 311. 

 Aspidium alpestre, Swartz, Syn. Fil., 421. 

 Athyrium alpestre, Nylander ; Lawson, Fern Fl. Can., 288. 



It has a strong general resemblance to Asplenium Filix-frnmina, from 

 which, however, it is distinguishable by the absence of indusia. Cas- 

 cade Mountains, B.C., about Lat. 49° (Lyall.) In wet places, at an 

 altitude of 7000 feet, on the slopes below the glacier along Bear Creek 

 at the summit of the Selkirk Mountains, near the line of the C. P. Ey., 

 and also abundant under the cliffs, at a height of 6000 feet, near the 

 summit of the Gold Eange north of Griffin Lake, B.C. (Macoun.) 



753. ASPIDIUM, Swartz, Schrad. Journ., i. and ii., 

 St. 4 and 29. (SHIELD-FERN.) 



(3002.) A. Noveboracense, Swartz, Syn. Fil., 55. Pursh,Pl. Am. 

 Sept., ii., 661. Macoun & Bargess, Trans. Eoy. Soc. Can., ii., sect, 

 iv., 200. 



Dryopleris Noveboraeensis, Gr., Man., ed. i., 630. 



Lastrea Noveboraeensis, Presl, Tent. Pterid., 75. Lawson, Can. Nat., i., 



284 ; Fern Fl. Can., 244. 

 Nephrodium thelypterioides, Michx., Fl. Bor.-Am., il., 267. 

 Aspidium ihelypteris, Hook., Fl. Bor.-Am., ii., 260, not of Swartz. 

 Aspidium thdypteris, var. noveboracense, Willd.; Provancher, Fl. Can., 718. 

 Polystichum Noveboracense, Watt, Can. Nat., iv., 363. 



Found in grassy swamps, moist woods and thickets, and is most 

 common in the Maritime Provinces, finding its western limit in Ontario. 

 Common in swamps and moist places in Nova Scotia. (Ball.) Very 



