474 GEOLOGICAL SURVEY OF CANADA. 



Lake, and reaches the neighborhood of the junction of the Shammat- 

 tawa and Steel Eivers, which form the Hayes Eiver. From this point 

 it turns south-west and crosses the N^elson Eiver at the outlet of Sipi- 

 wesk Lake. (B. Bell.) Both Dr. Bell and Professor Sargent give the 

 range of this tree to Lat. 65°, which is evidently a mistake, as Sir John 

 Eichardson states its limit to be in Lat. 62°. Sir William Hooker, in 

 his Flora places the limit on the Saskatchewan, while we have found 

 it on the Athabasca Eiver in Lat. 58°. (Macoun.) 



(2091.) A. subalpina, Engelm. Mountain Balsam. 



Pinus lasiocarpa, Hook. Fl. II., 163. 



Picea amabUis, Gordon, Pinetum, 154, in part. 



A. Ufolia, Murray, In Proc. Hort. See, London, III., 320. 



A. grandis, Engelm. in Am. Jour. Sci., 2nd ser., XXXIV., 310. 



Pinus amabUis, Parlatore in De Candolle Prod. XVI., 426, in part. 



Picea Ufolia, Murray in London Gard, Chronicle, 1875, 105. 



Interior of north-west America, last journey. (^Douglas.) On 

 the summit of the House Mountain, south of Lesser Slave Lake ; 

 abundant in the Bow Eiver Pass on mountain slopes from 5,000 to 

 7,000 feet altitude, extending on the line of the Canadian Pacific 

 railway from Castle Mountain to the -Selkii'k summit. {Macown.) 

 Appears to take the place of A. grandis in the region east of the 

 Coast ranges in British Columbia. It is not found in the southern dry 

 portion of the interior plateau, but grows abundantly in the Gold and 

 Selkirk ranges, and in the Eocky Mountain region east of McLeod's 

 Lake. Elsewhere in the northern portion of the interior plateau it 

 occurs in scattered groves, generally in localities nearly reaching or 

 surpassing 4,000 feet, but even in low valleys in the eastern portion of 

 the Coast ranges. It crosses the Eocky Mountains in the Peace Eiver 

 district, and occurs in cold damp -situations in the country between 

 Lesser Slave Lake and the Athabasca Eiver. In high and cool valleys 

 in the Eocky Mountains, southward to the 49th parallel, reaching 

 upward to the timber-line. {Dawson.^ 



(2092.) A. grandis, Lindley. Western White Fir. 

 Pinus grandis, Dougl. Hook. Fl. II., 163. 

 Picea grandis, Loudon. Gordon, Pinetum, 155. 

 A. Qordoniana, Carr., Trait. Conif., 2nd ed., 298. 

 A. amabilis, Murray, in Proc. Hort. Soc, London, III., 310. 



In British Columbia, confined to the vicinity of the coast, where its 

 range appears to be even more strictly limited than that of the cedar 

 or hemlock. (Dawson.) 



