466 GEOLOGICAL ''SURVEY OF CANADA. 



eastern Quebec. (E. Sett.} At Silleiy, near Quebec, and at the 

 Eiver Pentecote, Q. (St. . Cyr.) At the head of Lake St. John, Q., 

 Lat. 48. (Michaux.} A few trees still exist at Ottawa, but 

 up the river it is quite plentiful, and in the sandy region around 

 Chalk Eiver, and west of it, the greater part of the forest growth is of 

 this species. The Eice Lake plains were chiefly covered with this 

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

 can be seen on the 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 

 Nipigon Eiver, and small groves are found westward of Lake Superior, 

 to the Lake of the Woods arid "Winnipeg Eiver ; 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, Ont. (Burgess.} 



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

 Bot. California II., 126. 



P. rcsinosa, Hook. Fl. II., 161, in part. 



P. ponderosa, 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 Selkirk Eanges, from the 49th parallel north- 

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

 north as the head of the Upper Columbia Lake. References 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 Eraser, 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. (Dawson.) 



(2078.) P. contorta, Dougl. Scrub Pine. 



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



P. Banksiana, 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 



