356 GEOLOGICAL SURVEY OF CANADA. 



Eiver Pass on mountain slopes. (Macoun.) Fort Selkirk, Youcon 

 Eiver, Lat. 62 45'. (Schwatka.) 



Var. caerulco-purpureus, Gray. 



P. procerus, Dougl. Hook. Fl. II., 97. 

 P. Tolmiei, Hook. Fl. II., 98. 



Plains of the Saskatchewan to the Bocky Mountains. (Richardson 

 & Drummond.) Trader's Eoad, and at Wood Mountain, 49th parallel ; 

 Milk Eiver Eidge and westward up the Old Man Eiver within the 

 Eocky Mountains. (Dawson.) Frequent on the grassy slopes of 

 coulees and depressions in the prairie from Brandon westward to the 

 Eocky Mountains and northward from Calgary by Edmonton, the 

 Athabasca Eiver and Peace Eiver prairie to Lat. 56 ; very abundant 

 in northern British Columbia, and common on the Fraser and Thomp- 

 son rivers. (Macoun.) Along Ilgacho Brook and on the Tsi-tsutl 

 Mountains, B.C. (Dawson.) 



(1645.) P. humilis, Nutt. 

 In the Eocky Mountains near the British boundary. (Gray.) 



(1646.) P. gracilis, Nutt. 



Eed Eiver and Saskatchewan. (Richardson & Drummond.) Frequent 

 on dry hillsides throughout Manitoba and the western prairie region. 

 (Macoun.) "West of Moose Mountain Creek on dry soil, and plentiful 

 north of Cypress Hills. (<7. M. Macoun, C. P. JR. Coll.) On the 49th 

 parallel near Emerson, Man. (Burgess.) 



(1647.) P. pubescens, Solander. 



On dry, gravelly or sandy soil apparently confined to Ontario. 

 Vicinity of Ottawa. (Fletcher Fl. Ott.) Burnt lands in Huntley 

 Township, Carleton Co., and at the Fourth Chute of the Bonnechere, 

 Eenfrew Co., Ont. (Rev. J. K. McMorine.) Abundant in the counties 

 of Hastings and Northumberland, Ont. (Macoun.) Waterdown Eoad, 

 Burlington Heights, Hamilton, Ont. (1/ogie.) Niagara Eiver, Navy 

 Island and Maiden, Ont. (Maclagan.) Vicinity of London, and on 

 Point Pelee, Lake Erie. (Burgess.) Port Colborne, entrance to 

 Welland Canal, Ont. (David F. Day.) Strathroy, Ont. (McGill Coll. 

 Herb.) Lake of the Woods. (Dawson.) 



(1648.) P. glaucus, Graham. 



Eocky Mountains between Lat. 52-56. (Drummond.) Summit of 

 the South Kootanie Pass, Lat. 49, Eocky Mountains. (Dawson.) Fort 

 Selkirk, Youcon Eiver, Lat. 62 45'. (Schwatka.). On the Lower 

 Mackenzie Eiver. (McGill Coll. Herb.) 



