2 Canadian Record of Science. 



Lesquerella Ludoviciana, Wats., var. arenosa, Wats. 



Vesicaria Ludoviciana, Macoun, Cat. Can. Plants, Vol. I., 

 p. 54, in part, and Vol. I., p. 490. 



From Western Manitoba to the Saskatchewan. The 

 reference under L. Ludoviciana, Wats., var. arenosa, Wats., 

 Macoun Cat. Can. Plants, Vol. II., p. 305, should go with 

 L. arctica, Wat. 



Sisymbrium virgatum, Nutt. 



In gravel amongst bushes. Police Point, Medicine Hat, 

 Assa. In fruit May 31st, 1894. Herb. No. 3,069; prairies, 

 12-Mile Lake, Wood Mountain, Assa., June 6th, 1895. 

 Herb. No. 1 0,007 ; meadows. Sucker Creek, Cypress 

 Lake, Assa., 1895. Herb. No. 10,006. {John Macoun.). 

 Kew to Canada. The Canadian specimens have longer 

 pedicels and pods and are more paniculately branched 

 than those from the Ptocky Mountains in the United 

 States, but Dr. Robinson, who examined our specimens, 

 has been unable to detect a single significant or constant 

 character to separate the plants from the two regions. 



Arabis Drummondii, Gray: Macoun, Cat. Can. Plants' 

 Vol. I., p. 43, in part. 



A. Lijallii, Macoun, Cat. Can. Plants, Vol. I., p. 43 ; and 

 Vol. I., p. 487, in part : J. M. Macoun, Can. Rec. Science, 

 Vol. VI., p. 145. 



From the Cypress Hills, Assiniboia, west to the Gold 

 Range in British Columbia. Our specimens are from 

 Cypress Hills, Assa. ; Sheep Mountain, Waterton Lake, 

 Rocky Mountains ; mountains north of Devil's Lake, and 

 at Kicking Horse Lake, Rocky Mountains. {John Macoun.) 

 Maple Creek, Assa. ; Toad Mountain, Kootanie I^ke, B.C.; 

 Mount Queest, Shuswap Lake, B.C, {Jas. M. Macoun ) 

 Hocky Mountains, {Dnimmond.) 



