Contributions to Canadian Botany. 147 



Brassica sinapistrum, Boiss. 



Prof. Macoun gives Ontario as the western limit of 

 this species. We have now specimens from Fort Walsh, 

 Alberta ; Kananaskis, Eocky Mts. ; Sicamous, B. C. ; Cedar 

 Hill, Vancouver Island. {John Macoun.) 



Brassica Eapa, L. 



Escaped from cultivation and naturalized in many parts 

 of Canada. Not included in Prof. Macoun's Catalogue. 

 Our specimens are from Yarmouth, N. S. ; Kamloops, B. 

 C. ; waste places, North Arm, Burrard Inlet, B. C. ; fields 

 and meadows, Cedar Hill and Beacon Hill, Vancouver 

 Island ; meadows at Comox and on ballast heaps at Na- 

 naimo, Vancouver Island. (John Macoun.) 



Brassica alba, Gray. 



On ballast heaps at Nanaimo, Vancouver Island. (John 

 Macoun.) Not before recorded west of Ontario. 



Brassica nigra, Koch. 



On ballast and in waste places, Nanaimo, Vancouver 

 Island. Well naturalized, as it was found in 1887 and 1893. 

 ( John Macoun.) Not before recorded west of Ontario. 



Capsella divaricata, Wahl. 



Northeast coast of Newfoundland. (Rev. A. Waghorne.) 

 Dead Islands, Labrador. 1882 (J, A. Allen.) Dry ground, 

 Kamloops, B. C. (John Macoun.) Our only other speci- 

 mens are from Spence's Bridge, B. C. 



Lepidium sativum, L. 



In cultivated fields near Victoria and at Sooke, Vancou- 

 ver Lsland. (John Macoun.) Not before recorded west of 

 Winnipeg, Man. 



Thlaspi arvense, L. 



This weed grows yearly more troublesome throughout 

 the Northwest. It has now crossed into British Columbia, 

 being well distributed along the line of the Canadian Pacific 

 Railway at the summit of the Selkirk Mountains. 



