Conf ributions to Canadian Botany. 145 



Barbarea vuloarfs, R. Br., var. arcuata, Koch. 



Kinlaysou River, lat. Gl°. {Dr. Geo. M. Dawson.) 

 Revelstoke, H. C. (JoAn Macoun.) ^Eost northerly and 

 easterly stations for this variety. 



Arabis confinis, Wat. 



Fort Simpson and Peel's Rivei-, Mackenzie River. (Miss 

 E. Taylor.) Our most northerly specimens. 



Arabis humifusa, var. piibescens, Wat. 



North shore of Lake Athabasca, N. W. T., 1893. (J. W. 

 Tyrrell.) Our only other specimens are from Hudson Bay. 



Arabis Lyallii, Wat. 



Pi-of. Macoun (Cat. Can. Plants, Vol. I., p. 48*7) places the 

 westei'n limit of this species at the summit of the Selkirk 

 Mts. More westerl}^ stations are Toad Mt., Kootanie Lake, 

 B. C, alt. 5,500 ft., and Mt. Queest, Shuswap Lake, B. C, 

 alt. 6,000 ft. i^Jas. M. Macoun.) 



Cardamine Breweri, Wat. 



C. pratensis, L., var. occidentalis, Macoun, Cat. Can. 

 Plants, Vol. II., p. 60L 



In springs and ditches, Goldstream, Victoria, Comox and 

 Nanaimo, Vancouver Island. (John Macoun.) New to 

 Canada. Specimens of this plant collected by Prof. 

 ^Facoun at Xanaimo, in 1887, were called 0. pratensis, var. 

 occidentalis, by J>r. Watson. A recent comparison of our 

 specimens with the type at Harvard, by Prof. Macoun, 

 shows our plant to be C. Breweri. 



Cardamine pratensis, Linn., var. anqitstipolia, Hook. 



North shore of Lake Athabasca, N. W. T. (Jas. W. 

 Tyrrell.) 



J )raba nivalis, Jacq., var. elongata, Wat. 



First collected on the mountains at Kicking Horse Lake 

 by Prof. Macoun in 1885, and referred to D. stellata, Jacq. 

 Other stations are Kicking Horse River, Rocky Mts., alt. 

 4,000 ft., and Roger's Pass, Selkirk Mts., alt. 5,500 ft , 1890. 

 (Jas. M. Macoun.) ^Mountains near Banff, Eocky Moun- 

 tains, 1891. (^John Macoun,) 



