18(39 ] DRUMMOND — ON SPREADING PLANTS. 385 



frequent in grain fields around London and on St. Joseph's 

 Island, Lake Huron, and spreading in the County of Northum- 

 berland. 



Antennaria plantaginifolia, Hook. This plant is found every- 

 where throughout the Provinces, and beyond them extends to 

 Hudson's Bay and the Rocky Mountains. Farm yards and the 

 road-sides are favourite resorts of it. Among its near allies, the 

 Gnaphaliums, there is also a tendency to spread. 



Bidens frondosa, L. This, and perhaps one or two other 

 species of the same genus, frequently stray into railway and 

 roadside ditches. The known range of B. frondosa is from Lake 

 Erie to the Lower St. Lawrence. 



Lobelia injiata, L., a well distributed plant of both Provinces, 

 occurs in grain fields in the Province of Quebec, and is thought 

 to be the cause of some cases which have lately occurred of 

 poisoning among cattle. 



Hedeoma puhgioldes, Pers. and H. Jiispida, Pursh — neither of 

 which seems to range into the districts north of Lakes Huron 

 and Superior and into the Province of Quebec — both have, Mr. 

 Macoun informs me, spreading habits at Belleville. 



Verbe7ia hastata, li . is a frequent intruder on road-sides and 

 in neglected fields. In the indigenous state it is common from 

 the Manitoulin Islands to the neighbourhood of Quebec. 



V. urticifolia, L, This species occurs in similar situations to 

 V. hastata, and has a nearly analogous range. 



Veronica peregrina, L. This is a well-knuwn grass plant, 

 occurring on lawns, in parks and elsewhere. Its recorded range 

 is from Lake Erie to the vicinity of Quebec. 



Urtiea gracilis, Ait, Macoun remarks, has an introduced habit 

 at Belleville. From Lake Superior to Anticosti this plant has 

 been everywhere met with. 



Polygonum Pennsijlvanicum, L. In wet fields, road-sides, and 

 railway ditches, this, and perhaps one or two more Polygonums 

 are often found. P. Peniisi/lvanicum is known to range from 

 the Manitoulin Islands to below Montreal. 



Acalyplia Virgmica, L., is a familiar weed in some places. The 

 species is distributed from the Erie district to about the City of 

 Quebec. 



Euphorbia maculata, L., is a known road-side plant, and is 

 possibly an introduction from the United States. It ranges over 

 a considerable portion of Ontario. 



