1902] Macoun — Contributions to Canadian Botany, 273 



SiLPHIUM TEREBINTHINACEUM, L. 



Walpole Island, St. Clair River, Ont. [C. K.Dodge.) In 

 thickets at Sandwich and Windsor, Ont. {John Macoun.) 



Helianthus petiolaris, Nutt. 



Along the C. P. Ry. at Cache Lake, Ont. 1900. {John 

 Macoun.) Introduced from the west. 



Helianthus annuus, L, 



Head of Queen street, near High Park, Toronto, Ont. 

 1 90 1 . {Johfi Macoun. ) 



Chrysanthemum segetum, L. 



Near the tannery at Tilsonburg, Ont. 1901. {Macoun.) A 

 garden escape. Not recorded from Ontario. 



Chrysanthemum coronarium, L. 



A garden escape at Tilsonburg, Norfolk Co., Ont. {John 

 Macoun.) 



Artemisia caudata, Michx. 



Abundant in sandy fields at Sarnia, Lambton Co., Ont. 

 Collected in recent years by C. K. Dodge and by Prof. 

 Macoun in 1901. Herb. No. 26,339. The plants from Mani- 

 toba referred here in Macoun's Catalogue of Canadian Plants, 

 vol. I, p. 256, are A. Canadensis. 



Artemisia Abrotanum, L. 



Roadsides at Allenford between Southampton and Owen 

 Sound, Ont. 1901. {Macoun.) Not before recorded in these 

 papers. 



Senecio Plattensis, Nutt. 



Woods at Sandwich, Ont. Herb. No. 26,673, ^"'^ ^'^ 



Camlachie, seven miles from Sarnia, Ont. Herb. No. 26,674, 

 1901. {John Macoun.) New to Canada. 



Carduus Hillii, (Canby.) Porter. 



On shingle, Little Eagle Harbour, Lake Huron. Aug. 

 23rd, 1901. Herb. No. 26,454. {John Macoun.) Specimens 

 referred to Crticus pumilus, Macoun, Cat. Can. Plants, vol, i, 

 p. 555 are this species. 



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