20 GEOLOGICAL SURVEY OF CANADA. 



(42) R. hyperboreus, Eottb. Northern Ci-owfoot. 



Marshes in the Eocky Mountains, Lat. 52''-5'7°. (Drummond.) Arctic 

 Islands. (Parry.') Norton Sound to Wainright Inlet. (Rothr. Alask.) 

 Melville Island. (Br. Walker.) On both sides of Davis Strait and 

 Baffin's Bay. Greenland generally. (Hook. Arct. PI.) 



(43.) R. Hookeri, Eegel. Hooker's Crowfoot. 



R. pedatifidus. Hook. Fl. I., 18. 

 Barren summits of the Eocky Mountains, on the eastern side of the 

 ridge. Lat. 52°-55.° (Drummond.) 

 (44.) R. nivalis, Linn. Mountain Crowfoot. 



E. frigidus, Willd. Hook. Fl. I., 18. 



Lofty parts of the Eocky Mountains, Lat. 55° (Drummond.) Cop- 

 per Mountains and Arctic Sea coast, in muddy pools which become dry 

 during summer, Long. 110°. (Richardson.) Arctic coast near the 

 termination of the Eocky Mountains, Long. 140^. (Franklin.) La- 

 brador. (Torr. & Gray.) Assistance Bay, south end of Cornwallis 

 Island. (Dr. Sutherland.) Kotzebue Sound. (Rothr. Alask.) Green- 

 land. (Hook. Arct. PL) 



Yar. Eschscholtzii, Watson. 



JR. Eschscholtzii, Schlecht. Hook. Fl. I., 18. 



Near the region of perpetual snow, on the borders of streams on the 

 Eocky Mountains, Lat. 52°-56^. (Drummond.) Top of Mount Selwyn, 

 Peace Eiver Pass, Lat. 56°. (Macoun.) Eocky Mountains near the 

 49th parallel; and the Tsi Tsutl Mountains and Coast Eange, B. C. 

 (Dawson.) Kotzebue Sound to Cape Lisburne. (Rothr. Alask.) 



Var. sulphureus, Wahl. 



E. sidphureus, Solander. Hook. Fl. I., 17. 



Eepulse Bay. (Dr. Rae.) Arctic Islands and Greenland. (Hooker.) 



(44 b.) R. glacialis, Linn. 



E. Chamissonis, Schlecht. 



Pury Beach, Blwyn Inl^t, Gulf of Boothia. (Oapt. A. H. Markham.) 

 Greenland. (Hook. Arct. PI.) 



(45.) R. acrls, Linn. Meadow Buttercup. 



Introduced. Very abundant in every part of Ontario and Quebec, 

 and particularly so about the Sault Ste. Marie and Garden Eivers. Quite 

 common in Nova Scotia, and also becoming common in the eastern 

 part of Manitoba. (Macoun.) Newfoundland. (J. Bell.) Too abun- 



