1869.J DRUMMOND — ON SPREADING PLANTS. 381 



Belleville. Although distributed from the islands of Lake 

 Huron (Dr. Bell) to Labrador, and southward to Lakes Erie 

 and Ontario, it does not appear to be very common. 



Trifolium repens, L. Most of the individuals of this widely- 

 diffused species met with in these Provinces are probably intro- 

 duced. Agassiz seems to question whether the Lake Superior 

 plant may not be native. My esteemed correspondent, Mr. 

 Macoun, in a note on it, says, "T. repais is certainly a native, 

 but it is also an introduced plant. I have observed it in all my 

 wandering, and noticed that it always makes its appearance in 

 new clearings along with Erigeron Canadense." 



Vicia cracca, L. From Belleville eastwards this species is not 

 uncommon. Dr. Bell considers it introduced in Gaspe ; in 

 Ontario it is certainly indigenous. It appears among the intro- 

 duced plants of Agassiz and Lowell — (Agassiz's Lake Superior.) 



Potentilla Norvegica, L., forms one of those species which are 

 frequently found on roadsides and in fields, and yet may not be 

 introduced. In its undoubtedly native state it is common from 

 the northern coast of Lake Superior to Labrador and Newfound- 

 land. 



Potentilla Argentea, L., is fctfind abundantly in old sandy 

 fields at Toronto, Port Colborne, Picton and Gaspe. At Swamp- 

 scott, near Boston, I obtained it on the roadside in sandy soil. 

 It is questionably native. 



Agrlmonia Enpaturia, L., is frequently met with on roadsides. 

 In Southern Africa it is a naturalized plant (D'Urban.) The 

 indigenous form is well distributed over both Ontario and 

 Quebec. 



Galimn-Aparive, L. This plant, if it has not been overlooked, 

 has a hmited distribution. It occurs in the Erie district, and 

 ranges thence to Montreal. I have only met with it in gardens, 

 and Dr. Lawson, of Halifax, who has an extensive acquaintance 

 with the flora of these Provinces, informs me that his experience 

 is that the introduced form is not common except in gardens. 



Taraxacum dens-leonis Desf. This is a plant of wide dif- 

 fusion, extending northward to the Arctic zone. Wherever met 

 with in the settled parts of Ontario and Quebec, its habit is that 

 of an introduced plant. 



Achillea millefolium, L., is another extensively-diffused species, 

 which also ranges to the Arctic zone. It largely frequents road- 

 sides and waste fields. 



