Co}i(rihi(tioiis lo Canddian Bofani/. 207 



(J. A. Morton.) Letimy's Lake, Uull, Que.; Tail Creek, 

 N.VV.T. (John Manoun.) Indian Uead. Assu. ( (l^. Spread- 

 borough.) Sljort Creek, Souris River, .NCan. ; Belly Rivei-, 

 Alberta. (Br. G. M, Dawson.) " Arctic North America," 

 no locality. (Dr. Richardson.') 



(11.) P. IIartwriqhtii, Gra}', 



Salt Lake. Anticosti, (^ue. ; Elziver, Hastings Co., Ont. ; 

 Verinillion Lakes, near Banff, Rocky Mts. (Herb. No. 

 1,481.); Revelstoke, B.C. ; Kamloops, B.C. (John Macoun.) 

 Near York Factory, Hudson Bay. (Dr. R. Bell.) London, 

 Ont. (^Burgess.) Muskeg Island, Lake Winnipeg. (Jos. 

 M. Macoun.) 



(12.) P. Orientate, L. 



Ottawa, Ont. (Dr. A. R. C. Selwyn.) London, Ont. 

 (Burgess.) 



(13.) P. ALPINUM, All. 



Peel River, Mackenzie River Delta, 1892, {Miss E. Tay- 

 lor). The references under P. polymorphum, Macoun, Cat. 

 Can. Plants, Vol. I., p. 412, probably all go with this species 

 or its var. lapathifolium. 



(14.) P. AVICULARE, L. 

 From Ontario to Vancouver Island. 



Var. borealis, Lange. 



Specimens collected on the East Main River, Hudson 

 Bay, by A. H, 1). Ross, in 1892, wheu compared with speci- 

 mens from Grreenland seem certainly referable here. 



(15.) P. LiTTORALE, Link. 



P. erectum, Macoun, Cat. Can. Plants, Vol. 1., p. 407 in 

 part. 



Thunder Bay, Lake Superior. (iV. D. Britton.) Castle 

 Mountain, Rocky Mts. ; Banff', Rock}^ Mts., Herb. No. 

 1,487 ; near Devil's Lake, Rocky Mts., Herb. No. 1,486 

 (John Macoun.) Walsh, Assa. (./ M. Macoun.) 



y 



