Contributions to Canadian Botany. 285 



ERIGONUM NIVEUM, Doilgl. 



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

 {Dr. G. M. Dawson.) New to Canada. 



Erigonum cernuum, Nutt. 



Sand hills at the crossing of Many Berries Creek near 

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

 South Saskatchewan at Police Point, Medicine Hat, Assa. 

 Herb. No. 1294G. {John Macoun.) New to Canada. 



Polygonum bistortoides, Pursh. 



On the summit of Sheep Mountain, Waterton Lake, 

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

 No. 12989. {John Macoun.) New to Canada. Arctic 

 American specimens referred to P. Bistorta seem to be 

 intermediate between that species and P. bistortoides. 



Sassafras officinale, Nees. 



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

 western limit in Ontario. 



QUERCUS ALBA, L. 



Elevated shore of Bainy Lake, Ont., 1896. ( W. Mclnncs.) 

 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°. {Jas. W. Tyrell.) 



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

 Vol. II., p. 44. 



Near Niagara, Ont., 1890. (/. Dearness.) Jordan 

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

 rare and not collected for many years. 



