80 



The following table indicates comparative destructiveness of some 

 Ontario weeds, compiled from reports of correspondents in nearly ^every 

 township in^the Province. 



Canada Thistle 



Mustard 



Wild Oat 



Couchgrass 



Rag weed ~~ 



Ox-eye Daisy 



False Flax 



Dock 



Burdock 



Foxtail 



Pig weed 



Perennial Sow Thistle 



Blue weed ^ 



Annual Sow Thistle 



Chess 



Bindweed 



Sheep Sorrell . . 



Purple Cockle 



Dandelion 



Lamb's Quarters _ 



White Cockle 



Purslane . 



Moth Mullein , 



Shepherd's Purse 



Wormseed Mustard 



Dodder 



Hound's Tongue 



Eib Grass 



Bladder Campion 



Fleabane 



Mullein , 



Pennycress 



Cornflower : 



Pepper Grass 



Catchfly 



