274 GEOLOGICAL SURVEV OF CANADA. 



rocks near Hamilton's Farm, Eiver Eouge, Que. (D' Urban.) Nun's 

 Island, Montreal, (^ue. (Parsons.) Ottawa, Ont. {Fletcher.) Far- 

 mersville, and banks of river westward of Brockville, Ont., in crevices 

 of Laurentian rocks. (Lawson.) Woods, Belleville, Castleton, and 

 Bi-ighton, Ont. (Maccnin.) Woodstock, Ont. {Jlillman.) Eich woods, 

 London, Ont. ( Buri/ess.) Amherstburgh, Ont. (Maclagan.) 



(3007.) A. Filix-mas, Swartz, Schrad. Journ., ii., 38 ; Sj-n. Fil, 55. 

 Goode, Can. Xat , ix., 297. Macoun & Bm-gess, Trans. Eoy. Soc. 

 Can., ii., sect, iv., 204. 



Polysticlium Filix-mas, Roth, Fl. Germ., iii., 82. Watt, Can. Kat., iv.,363. 

 Ntpkrodium. Filix-nuts, Richard, Desv., M^in. Son. Linn, vi., 60. Hook. 



& Baker, Syn. Fil., 272 (exclusive of vars. ; and <'.) 

 Lastrea PUU-mas, Presl, Tent. Pterid., 76. Lawson, Can. Xat i., 282 ; 

 Fern Fl. Can., 24L 

 Occurs in rocky woods and on open, rocky hillsides. Whycocogmali, 

 Cape Breton, X.S. {Lindsay.) Aspej' Bay, Lake Ainslie, and 

 Cape Mabou Mountain, Cape Breton, N.S. (McKay.) Keswick 

 Eidge, N.B. (Moser.) Daley's Wood, Eichraond, N.B. (Hay.) Abun- 

 dant and very luxuriant along the Gasp^ coast, at Fox Eiver, Que. ; 

 plentiful on the line of the C. P. Ey. on the lower slopes of Mount Mac- 

 donald, near Bear Creek, summit of the Selkirk Eange, B.C. (Macoun.) 

 Among loose rocks under the limestone cliffs at the rear of Eoyston 

 Park, Owen Sound, Ont., and about ten miles up the Georgian Bay, 

 under the same i'ange of dirts. (Mrs. Roy.) British Columbia. [Lyall.) 



(3008.) A. rigidum, Swartz, Schrad. Journ., ii., 37 ; Syn. Fil., 53. 

 Macoun c*^ Burgess, Trans. Eoy. Soc. Can., ii., sect, iv., 205. 

 Nephrodium rigidum, Desv., Ann. Linn., vi., 261. 

 Lastrea rigida, Presl, Tent. Pterid., 77. Lawson, Fern Fl. Can., 243. 



Found growing in tufts among rocks on mountain sides. Mount 

 Finlayson, near Victoria, Vancouver Island, B.C. (Cowley, Anderson.) 

 Th^e southern Pacific coast form, var. argutum, presents, according to 

 Prof. Eaton, no points of specific difference from ours, which is typical 

 rigidum, except that its fronds are larger and broader. 



(3009.) A. marginale, Swartz, Syn. Fil., 50; Pursh, Fl. Am. Sept., 

 ii., (iti2; Hook.. Fl. Bor.-Am., ii., 260 ; Provancher, Fl. Can. 718. 

 Macoun & Burgess, Trans. Roy. Soc. Can., ii., sect, iv., 205. 



Nephrodium marginale, Michx., Fl. Bor.-Am., ii., 267. Hook. & Baker, 



Syn. Fil., 273. 

 Lastrea maryinalis, Presl, Tent Pterid., 77. Lawson, Can. Nat, i., 281 ; 



Fern Fl. Can., 242. 

 Folystichum marginale, TVatt, Can. Nat, iv., 363. 



