Recent Changes in the Flora of Montreal 489 



shrubs in a vacant lot on St. Catherine Street, West- 

 mount, not far from the M. A. A. grounds. It belongs 

 to the Middle States of the Union, and has not been 

 hitherto reported from Canada. July-September. 



Sonchus arrensis L. — This worst of weeds, although 

 of European origin, has, like one or two others men- 

 tioned above, invaded Eastern Canada by way of Mani- 

 toba and the "Western Provinces, where it is a dreadful 

 scourge, much of the land on the Red River being virtu- 

 ally valueless, it has so thoroughly taken possession of 

 the soil. Being a great seeder it makes its way rapidly 

 when care is not taken to destroy it before the seed is 

 ripe. Farmers in the East must vigilantly combat it, if 

 they would escape the endless trouble which it causes to 

 their western contemporaries. July-October. 



Latuea Scariola Var-integrata Gren. Godr. — This 

 is also a Western invader that has taken firm hold in the 

 district of Montreal; but it is not yet among us the ter- 

 rible nuisance it is in Ottawa. In all the ruins left by 

 the great fire near the Chaudiere in that city it fairly 

 covers the ground. 



Hieracium aurantiacum L. — The devil's paintbrush 

 is better known and more dreaded in the Eastern Town- 

 ships than in Montreal and vicinity, on which, however, 

 it is gradually encroaching. It has an attractive blos- 

 som, but it should be pulled up wherever met with. Vast 

 territories in the State of New York are rendered useless 

 by it. August-October. 



