274 GEOLOGICAL SURVEY OF CANADA. 



rocks near Hamilton's Farm, River Rouge, Que. (D' Urban.") Nun's 

 "Maud, Montreal, Que. (Parsons.} Ottawa, Ont. (Fletcher.) Far- 

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

 of Lauren tian rocks. (Lawson.) Woods, Belleville, Castleton, and 

 Brighton, Ont. (Macoun.) Woodstock, Ont. (Millman.) Eich woods, 

 London, Ont. (Burgess.) Amherstburgh, Ont. (Maclagan.) 



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

 Goode, Can. Nat , ix., 297. Macoun & Burgess, Trans. Roy. Soc. 

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



Polystichum Filix-mas, Both, Fl. Germ., iii., 82. Watt, Can. Nat., iv., 363. 

 Nephrodium Filix-mas, Richard, Desv., Me"m. Soc. Linn, vi., 60. Hook. 



& Baker, Syn. Fil., 272 (exclusive of vars. 7 and tf.) 

 Lastrea Filix-mas, Presl, Tent. Pterid., 76. Lawson, Can. Nat. i., 282; 



Fern Fl. Can., 241. 



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

 Cape Breton, N.S. (Lindsay.) Aspey Bay, Lake Ainslie, and 

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

 Ridge, N.B. (Moser.) Daley's Wood, Richmond, N.B. (Hay.) Abun- 

 dant and very luxuriant along the Gaspe" coast, at Fox River, Que. ; 

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

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

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

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

 under the same range of cliffs. (Mrs. Roy.} British Columbia. (Lyall.) 



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

 Macoun & Burgess, Trans. Roy. 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.) 

 The 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., 662 ; 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. Laws*on, Can. Nat, i., 281 ; 



Fern Fl. Can., 242. 

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



