Contributions to Canadian Botauy. 285 



Erigonum niveum, DougL 



Dry ground, Lake Okanagan, B.C., Sept. 15th, 1890. 

 {Dr. G. M. Dau-son.) New to Canada. 



Erigonum cerntjum, Nutt. 



Sand hills at the crossing of Many Berries Creek near 

 Milk Kiver, Assa. Herb. No. 12947 ; on the banks of the 

 South Saskatchewan at Police Point, Medicine Hat, Assa. 

 Herb, No. 12946. {John Macoun.) New to Canada. 



Polygonum BisTORTOiDES, Pursh. 



On the summit of Sheep Mountain, Waterton Lake, 

 Rocky Mountains, alt. 7,500 ft., July 31st, 1895. Herb. 

 No. 12989. {John Macoun.) New to Canada. Ai'ctic 

 American specimens referred to F. Bistorta seem to be 

 intermediate between that species and P. bistortoides. 



Sassafras ornciNALE, Nees. 



Near Sarnia, Lambton Co., Ont. {C. K. Dodge.) North- 

 western limit in Ontario. 



QUKRGUS ALBA, L. • 



Elevated shore of Rainy Lake,.Ont., 1896. ( W. Mclnnes.) 

 Western limit in Canada. 



Cypripedium acaule, Ait. ; Macoun, Cat. Can. ' Plants, 

 Vol. II., p. 22. 



Dry hillock of sand and boulders. Lat. 57' 30', Long. 

 107°.* (/«5. W. Tyrell.) 



UvuLARiA perfoliata, L. ; Macoun, Cat. Can. Plants, 

 Vol. II., p. 44. 



Near Niagara, Ont., 1890. {J. Deamess.) Jordan 

 Station, near Niagara, Ont., 1892. {John Macoun.) Very 

 rare and not collected for many years. 



