CATALOGUE OP CANADIAN PLANTS. 71 



John Co., ISr.B. (Fowler, Cat.) Meadows near Gregory's, Montreal, 

 1821. (Dr. mimes.) Durham, Q. (McGill Coll. Herh.) Vicinity of 

 Ottawa ; common. {Fletcher, Fl. Ott.) Muddy Creek, near Huckle- 

 berry Eapids, Argenteuil Co., Q. (JD'Urhan.) Conway's Creek and 

 other places ; common at Prescott, Ont. (Billings.) Mud, in the bed 

 of small streams and along lakes and ponds in central Ontario. 

 {Macoun ) In water, London, and Hatehley, Ont. (burgess.) Abun- 

 dant in the mouths of the Kaministiqua Eiver, and in marshes, Nipi- 

 gon Bay, Lake Superior. (Macoun.) Oba Lake, Ont. ; and Nelson 

 Eiver, Keewatin. (B. Bell.) Thunder Creek, at the Elbow of South 

 Saskatchewan, Assiniboia; abundant in marhsy places, along lakes 

 and ponds throughout Vancouver Island, from Victoria to Qualicum, 

 on the east coast ; and in the Somas and Stamp rivers at Alberni, on the 

 west side of the island. (Macoun.) Ilgacho Brook, B.C. (Dawson.) 

 Throughout Canada to Fort Fi-anklin ; abundant. (Hooker, FL) 



(2402.) S. affine, Schnitzlein. 



S. naians, Linn. ; Pursh, Fl. II., 34; Hook., Fl. II., 169. 



S. simplex, Huds., var. angustifolium, Gray, Man. Ed. V., 481. 

 This species is doubtless overlooked in many sections of the country, 

 as it does not seem to be I'are ; when looked for it can easily be distin- 

 guished by its narrow floating leaves. Newfoundland. (Beeks.) North 

 Sydney, Cape Breton, (Macoun.) Halifax, N.S. (Sommers, Oat.) 

 Pictou, Co., N.S. (McCulloch.) Caledonia, Guysboro Co., N.S. (Fari- 

 bault.) Salmon Eiver ; Kennebeccasis and Bass rivers, N.B. (Fowler, 

 Cat.) In marshes, Salt Lake, Anticosti ; mouth of the Eestigouche 

 Eiver, and Grand Valine, Gaspe, Q. ; muddy border of Partridge Lake, 

 Addington Co., Ont. ; abundant in the still waters of the Trent, Sey- 

 mour, Northumberland Co., Ont., and in the middle channel at the 

 mouth of the Kaministiqua, Lake Superior. (Macoun.) North shore of 

 Lake Superior. (Agassiz.) Lake Joseph, Muskoka Co., Ont. (Burgess.) 

 LakeMistassini,N.E.T. (J. M. Macoun.) Lake of the Woods. (Dawson.) 

 Kotzebue Sound, and Ounalashka. (Bothr. Alalsk.) Alpine lakes of the 

 Eocky Mountains ; rare, (Hooker, Fl.) 



(2403.) S. hyperboreum, Laest., var. Americanum, Beeby. 



Apparently a northern species, and evidently not rare in suitable 

 localities. Labrador. (Butler.) In a ditch near Louisburg, Cape 

 Breton Island ; in a marsh at Ellis Bay, Anticosti. (Macoun.) Fort 

 George, James Bay. (J. M. Macoun.) Fort Churchill, Hudson Bay. 

 (B. Bell.) 



(2404.) S. minimum, Fries. ; Gray, Man. Ed. V., 432. ■ 

 This and >Si. hyperboreum have hitherto been confounded in our coUec- 



