12 GEOLOGICAL SURVEY OF CANADA. 



<2234.) P. verticillata, Nutt. Gen. II., 192. 



Arethusa verticillata, Pursh, Fl. II., 591. 

 A. medeoloides, Pursh, Fl. II., 591. 



Low damp woods, Komoka, Ont. ; rare. {Burgess. Millman.) 

 598. EPIPACTIS, R. Br. 



(2235.) E. gigantea, Dougl. Hook., Fl. II., 202. 



E. Americana, Lindl., Orchid. 462. 

 Under evergreens, at Osoyoos Lake, B.C. (Dawson.) 



599. ORCHIS, Linn. Gen. 1009. (ORCHIS.) 



<2236.) O. spectablis, Linn. Hook., Fl. II., 195 ; Pursh, Fl. II. 587. 



0. humtiis, Michx., Fl. II., 155. 



Kich low woods, rather rare. Keswick, and at Eel Eiver, Carleton 

 Co., N.B. (Fowler, Oat.) Gomin's wood, Quebec. (St. Cyr.) Vicinity 

 of Montreal, 1821. (Dr. Holmes.} Stewart's bush and other locali- 

 ties near Ottawa, hot uncommon. (Fletcher, Fl. Ott.) Miriwin's 

 woods and elsewhere around Prescott, Ont. ; common. (Billings.) 

 Eich 'woods near Belleville, Hastings Co. ; also at Castleton and 

 Campbellford, Northumberland Co., Ont. (Macoun.) Vicinity of 

 Hamilton. (Logie.) Eich woods, London, Ont. (Burgess. Millman.) 



(2237.) O. aristata, Fisch. Hook., Fl. II., 195. 



0. latifolia, Linn. Rothrock's Alaskan Plants, 456. 

 Ounalashka. (Chamisso vide Hooker.) 



.(2238.) O. rotundifolia, Gray, Amer. Journ. Sci. CXIV., 72. 

 Pursh, Fl. II., 588. 



Habenaria rotundifolia, Rich. Gray, Man. Ed. V., 500, Macoun, Cat., 



No. 1773. 

 Platanthera rotundifolia, Lindl. Orchid. 286. 



Occasionally met with in peat bogs; commoner westward. Eiviere de 

 Brig, Anticosti. (Macoun.) In damp woods near Eiviere du Loup, Q. 

 (Thomas.) Mingan Islands, Q. (St. Gyr.) Very abundant in the big 

 swamp, Murray, Northumberland Co., Ont. Dow's swamp, near 

 Ottawa. (Fletcher, FL Ott.) Lake Mistassini, N.E.T. ; also South 



