1 62 The Ottawa Naturalist. | November 



CONTRIBUTIONS TO CANADIAN BOTANY.* 



By James M. Macoun, Assistant Naturalist, Geological Survey of Canada. 



XVIII. 



Mitella diversifolia, Greene. 



Near Trail, Columbia River, B C, May 19th, 1902. No. 

 64,574.1 ( W. Spreadborough.) New to Canada. 



Heuchera flabellifolia, Rydb., N. A. Fl. xxn : 115. 



H. parvifolia, Cat. Can. Plants 1 : 158 & 526. 



All the Canadian specimens referred to H. parvifolia in 

 our herbarium prove to be H. flabellifolia. They are from 

 Milk River Ridge, Alta. No. 10,560; Cypress Hills, Alta. 

 No. 8,514, and Crow Nest Pass, Rocky Mts. No. 20,167. 

 (fohn Macoun.) Milk River Ridge, Alta. No. 8,515. {Dr. 

 G. M. Dawson. ) 



Heuchera Columbiana, Rydb., N. A. Fl. xxn : 116. 



H. cylindrical var. alpina, Cat. Can, Plants, 1 : 526 in part. 

 H. cylindrical var. oval/folia, Contr. Can. Bot. No. 6, p 5, 

 in part. 



Crow Nest Pass, Rocky Mts. No. 8,500. {Dr. G. M. 

 Dawson.) Waterton Lake, Reeky Mts. No. 10,561 ; Eagle 

 Pass, C. P. Ry., B.C. No. 8,503. {John Macoun.) Trail, 

 Columbia River, B.C. No. 64,571. ( /. M. Macoun.) Re- 

 ferred to H. glabella by Rosendahl, but apparently a good 

 species. 



Saxifraga rufidula, (Small). 



S. occidenlalis, Cat. Can. PI.. 11 : 321 in part. 

 Micranth.es rufidula, Small, N. A. Fl., xxn : 140. 



Well characterized by the red-tomentose under-surface of 

 the leaves. Described from specimens collected by Prof. 

 John Macoun on Mount Finlayson, Vancouver Island, May 



*Published by permission of the Director of the Geological Survey of 

 Canada. 



tSpecimens have been distributed from the herbarium of the Geological 

 Survey under these numbers. 



