i;!2 UEOI.Otilc.M, SIRVKY OK CANADA. 



(GO'A.) R. nivalis, l>'»iii,d. Hook. Kl. I., 181. 



On llio liigli snowy riilgcs of the Rocky Mouiiljiins. (^Pouglas.) TIh.h 

 is an t>l)scuro s])eries uml should be looked Tor ahoiU the sources ol' (ho 

 Columhia. 



161. PURSHIA, DC. ("CHAPPARAL.") 

 ((504.) P. tridentata, DC. 



Tuiarcn Iridivtatii, l'm>li, '.V.V.]. 

 Dsoyoos J.ake, soullierii bt)unilury ul' liritisli Ooiuinhia. {JJawsoti.) 



162. DRYAS, Linn. (DRYAS.) 



(605.) D. octopetala, Linn. 



Rocky Mountains, Lat. 52°-56°, sometimes with double llowei-H. 

 (Drummond.) On the top of Stuart Lake Mountain, B. C, and on 

 Mount Selwyn, Peace River Pass, Lat, SG". (Macou7i.) Coast Range, 

 near Bute Inlet, B. C, and on the Rocky Mountains, S. Kootanie Pass. 

 (Dawson.) Kotzebiie Sound to Port Clarence and northern shore. 

 (Rothr. Alask.) Cape Lisburne, in Behring's Straits. (Beechey.) Shores 

 and islands of the Arctic Sea. (FranJdin.) Greenland. (JIooJc Arct. PL) 



Var. integrifolia, Cham. & Schlecht. 



D. intcgrifoJia, Yalil. ITook. Fl. L, 174. Macoun's Cat., No. 522. 

 D. tenella, Tursh, 350. 



Island of Anticosti. (Goldie.) Lal)rador. {Butler.) Churchill River 

 and east coast of Hudson's Bay. (B. Bell.) In dry and rocky places 

 from Lat. 54° to the islands of the Arctic Sea, where it is abundant. 

 (^Richardson.) Extending westward to Behring's Straits. (Chamisso.) 

 Rocky ^lountains, Lat. 52°-56°, especially on the more elevated ridges. 

 (^Drummond.) Top of Mount Selwyn, Peace River Pass. (Macoun.) 



(606.) D. Drummondii, Hook. 



On gravelly beaches and bars of rivers. Dartmouth, and Ste. Anne 

 des Monts, Rivers, Gaspd, Q. Gravel bars in the Bow River at and 

 above Morley ; Peace River, within the Rocky Mountains, and west to 

 the Blackwater River, B.C. (Macoun.) Island of Anticosti. (Pursh.) 

 Slate Islands, Lake Superior. (Prof. Ellis.) In the woody country, 

 Lat. 54''-64°, and about Slave and Bear Lakes, as far as the mouth of 

 Bear Lake River, and thence to the shores of the Arctic Sea. (Richard- 

 son.) Gravelly battui-es of alpine rivers, Lat. 52°-56°. (Drummond.) 

 Rocky Mountains, Kootanie Pass. (Dawson.) 



