CATALOGUE OF CANADIAN PLANTS. 39 



(119.) N. lacustre, Gray. Eiver-cress. 



N. natans. Hook. Fl. I., 39. 



N. natans, var. Americanum., Gray. Terr. & Gray Fl. I., 75. 



[f) Coddearia. aqitatiea, Eaton, Manual, 181. 



In water near Montreal. (Goldie.) Vicinity of Ottawa. (Fletcher, 

 Fl. Ott.) Near Prescott, Ont. (Frovancher.) Grand Eiver and Maiden, 

 Ont. (Maclagan.) Eamsay, Ont. (J. Bell.) Very abundant in the still 

 waters of the Trent between Heely's Falls and Hastings village, and in 

 great profusion in the Trent at Meyersburg above the bridge over the 

 Percy Ureek, Ont. ; also at Port Dover on Lake Erie. (Macoun.) 



(120.) N. Armoracia, Fries. Horse Eadish. 



Armorada rusticana, Rupp. Wood., Bot. & Fl., 41. 

 Introduced. Wastes near gai'dens, Quebec. {Brunet.) Not uncom- 

 mon near London. Ont. (Burgess.) Waste places where rubbish is 

 deposited' in and around Belleville, Ont. ; Canada Southern Eailway near 

 Amherstbui-gh, Ont., and at Niagara Falls. (Macoun.) Vicinity of 

 Ottawa. (Fletcher Fl. Ott.) 



41. DENTARIA, Uinn. (PEPPER-ROOT.) 



(121.) D. diphylla, Michx. Krinkle Eoot. 



Pictou, N.S. (McKay.) Kent Co., and near Fredericton, N.B. 

 (Fowler's Cat.) Bathurst, N.B. (McGill Coll. Serb.) Eivifire du 

 Loup, Q. (Thomas.) Throughout Quebec and Ontario to Lake Superior. 



(122.) D. laciniata, Muhl. Purple-flowered Tooth-wort. 



Low grounds of the river St. Francis, Q., i-are. (Brunei.) Beechwood, 

 near. Ottawa. (Fletcher Fl. Ott.) Common in rich woods near 

 London, Ont. (Burgess.) Mountain west of Hamilton, Ont. (Logic.) 

 Pentanguishene, Ont. (Richardson.) Chippewa, Navy Island, and 

 Maiden, Ont. Maclagan. Ameliasburgh, P. B. County, Ont., and 

 near Amherstburgh, Lake Brie. (Macoun.) 



(123.) D. tenella, Pursh. 439. 



D. tenuifotta, Hook. Fl. I., 46. 

 Northward to Vancouver Island and Lower Fraser Eiver, B. C. 

 (Lyall.) In low rich ground, vicinity of Victoria, Vancouver Island. 

 (Macoun.) 



Doubtful Species. 



C> heterophylla is reported from Hamilton by Mr. Buchan, Prin- 

 cipal of Trinity College, Toronto, and D. maxima, from Gait, by 



