136 GEOLOGICAL SnE^VET OE CANADA. 



168. POTENTILLA, Linn. (OINQUE-FOIL. FIVE-FINGER.) 



(623.) P. arguta, Pm-sh. 



Dry rocky thickets and open prairies. Keswick Eidge,N.B. (Moser.) 

 Devil's Eapids, Eiver Eouge, Q. (D' Urban.) From the vicinity of 

 Ottawa this species is more or less -abundant to northern British 

 Columbia on the Nachacco Eiver. (Macoun.') In the Nicola Yalley, 

 B.C. {Dawson.) Woody country as far north as Lat. 65°. {Richardson.) 



(624.) P. ailandulosa, Lindl. 



P. arguta, Lehm. Hook. Fl. I., 186, in part. 

 P. fissa, Nutt. Torr. & Gray, Fl. I, 446. 



Eocky Mountains in the S. Kootanie Pass, and along the southern 

 border of British Columbia. {Dawson.) 



(625.) P. Norvegica, Linn. 



Very abundant in cultivated grounds, river bottoms and on lake 

 shores. From Nova Scotia to the Eocky Mountains, and as far north 

 as Bear Lake. {Richardson.) Hudson's Bay. {R. Bell.) Labrador 

 coast. {Butler.) Sitka and Point Barrow to the Mackenzie Eiver. 

 {Rothr. Alask.) 



Var. hirsuta, Torr. & Gray. 



P. Urmta, Michx. Hook. Fl. I., 193. 



From Quebec to the Gulf of St. Lawrence. {Michaux.) Plains of 

 the Saskatchewan. {Richardson.) Lake Mistassini. {J. Richardson.) 

 Borders of ponds and lakes, prairie region ; and doubtless frequent in 

 Ontario, {Macoun.) 



(626.) P. rival is, Nutt., var. millegrana, Watson. 

 P. millegrana, Engelm. Macoun's Cat., No. 535. 

 Borders of ponds and lakelets in the south-western part of the prairie 

 region. Eather common. {Macoun.) 



(627.) P. supina, Linn. 



P. paradoxa, Nutt. Torr. & Gray, Fl. I., 437. 



Borders of lakes and ponds. Bm-lington Beach, Hamilton, Ont. 

 {Buchan.) Shores of Toronto Island and westward up the lake shores 

 to Amherstburg, Ont. Abundant on the shores of Long Lake, Old 

 Wives' Lakes, Gull Lake, and many others in the prairie region. 



{Macoun.) 



(628.) P. Pennsylvanica, Linn. 

 Dry, gravelly soil. North shore of St. Lawrence, Murray Bay., 



