4tJt) GEOLOUICAL SLR\EV OV CANADA. 



eiistorn Quoboc. (i?. Tie!!.) At Sillory, iionr (iuobec, and at the 

 Jiivor Pentocote, (J. {St. Ci/r.) At the head of Lake St. John, Q., 

 Lat. 48^ {Mic/uiu.c.) A few trees still exist at Ottawa, but 

 nj) tlie river it is quite pleutilul, anil in the sandy region around 

 Chalk liiver, and west of it, the greater pari of the forest growth is of 

 this species. The Kice Lake plains were chiefly covered witli this 

 tree, as well as all (he sandy tracts in Central Ontario. Fine groves 

 can be seen on I he Canadian Pacific railway as far west as Dog Lake, 

 but after this it becomes rare, and the last one disappears at Birch 

 Lake, about fifty miles to the west. A few trees appear again on the 

 NipigoM Kiver, and small groves are found westward of Lake .Superioi", 

 to the Lake of the Woods and Winnipeg Eivcr; also on sandy ridges 

 in the Muskeg country west and south-west of the Lake of the Woods. 

 (Macoun.) Sandy soil around Toronto, and on sand and rock at 

 Parry Sound, Muskoka, Out. {Burgess.) 



(2077.) P. ponderosa, Dougl. var. scopulorum, Engelm. in 

 Bot. California IL, 126. 



P. resinosa, Hook. Fl. II., IGl, in part. 



R pondcrom, Dougl. Macoun's Cat. No. 1694. Also, Dawson. 



A remarkably handsome tree, characteristic of the central and south- 

 ern dry region of British Columbia, occurring between the Coast Eanges 

 and line of the Gold and Selkii-k Eanges, from the 49th parallel north- 

 ward to Latitude 51° 30'; also in the Colurabia-Kootanie valley, as far 

 north as the head of the Upper Columbia Lake. Eeferences to occur- 

 rences east of the Eocky Mountains north of the 49th parallel (Eeport 

 of Progress, Geological Survey, 1879-80, p. 172 b) not confirmed, and 

 probably erroneous. On the Similkameen, this tree is found furthest 

 west three miles above Nine-Mile Creek. On the Coldwater it reaches 

 to eighteen or twenty miles from the Nicola ; down the Fraser, to 

 thirty miles above Yale, and northward on the main waggon-road to 

 '• the Chasm," beyond Clinton. It extends for about forty miles up the 

 North Thompson, is found on the northern slopes of the south-western 

 arm of the Great Shuswap Lake, and also sparingly on the southern 

 part of the Salmon arm. West of Okanagan Lake (toward Cherry 

 Creek), nearly to the Camel's Hump Mountain. (Bawson.) 



(20T8.) P. contorta, Dougl. Scrub Pine. 



P. inops, Hook. Fl. IL, 161, in part. 



P. Banksianq^ Lindley & Gordon, Jour. Hort. Soc, London, V., 218, 

 in part. 



Everywhere on the coast of British Columbia, but particularly on 

 sandy dunes and exposed rocky points, where it is frequently gnarled 



