526 GEOLOGICAL SURVEY OF CANADA. 



180. TIARELLA. 



(721.) T. unifoliata, Hook. In thick woods on mountain sides 

 from Kicking Horse Lake in the Rockies to the summit of the Selkirk 

 Range, B.C. (Macoun.') In woods at Michel Creek, Rocky Mountains. 

 (I) aw son.} 



(722.) T. trifoliata, Linn. In woods at Comox, Vancouver 

 Island. (Daivson.) 



181. MITELLA. 



Page 15?! 



(725.) M. pentandra, Hook. Very abundant on beds of snow 

 slides at Kicking Horse Lake in the Rockies and westward to the 

 summit of the Selkirks, B.C. (Macoun.} 



(726.) M. triflda, Graham. Abundant on Cathedral Mountain, 

 Kicking Horse Pass, Rocky Mountains. (Macoun.*) 



(2144.) M. Breweri, Gray. On the western summit of the North 

 Kootanie Pass, Rocky Mountains, 1883. (Dawson.^) On the slopes 

 of Mounts Carroll and Dawson, Selkirk Range, B.C., 1885. (Macoun.^ 



182. HEUCHERA. 



(728.) H. micrantha, Dougl. Harrisburg, Alaska. (Meehan.) 

 North Point of Texada Island, Gulf of Georgia, and Cold water River, 

 B.C. (Dawson.} 



(729.) H. glabra, Willd. Abundant on the slopes of Mounts 

 Carroll and Dawson, and along Bear Creek and other small streams at 

 the Selkirk summit, B.C. (Macoun.*) Harrisburg, Alaska. (Meehan.} 



Page 158. 



(731.) H. cylindrica, Dougl. var. alpina, Watson. 

 H. Hallii, Gray. Part I. 



All references under H. Hallii, belong here. Crow Nest Pass, 

 Rocky Mountains. (Dawson.'} On mountain slopes at Kananaskis 

 and Castle Mountain, Rocky Mountains. (Macoun.') 



(732.) H. parviflora, Nutt. Milk River Ridge, N.W.T., 1883. 

 (Dawson.) 



