Contributions to Canadian Botany. 147 



Brassica sinapistrum, Boiss. 



Prof. ^Facoiin gives Ontario as the western limit of 

 this species. AVe have now specimens from Fort Walsh, 

 Alberta ; Kananaskis, I\Ocky Mts. ; Sicamous, B. C. ; Cedar 

 Ilill, Vancouver Island. {John Macoun.) 



Brassica Rapa, L. 



Escaped from cultivation and naturalized in many parts 

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

 Our specimens are fr-Mn Yarmouth, IN". S. ; Kamloops, B. 

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

 and meadows, Ced:ir 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 188Y 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 Island. (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. 



