TABLE OF NOXIOUS WEEDS 67 



curled dock, smooth dock, buckhorn, or ribbed plantain, 

 wild parsnip, horse nettle, velvet weed or button weed 

 and burdock. 



The Canada thistle, quack grass, horse nettle, cockle- 

 bur, and squirrel-tail grass are the most injurious in 

 Iowa, while Dr. Halsted gives some of the worst weeds 

 found in the state of New Jersey as follows: Canada 

 thistle, wild carrot, docks, ox-eye daisy, ragweed, sorrel 

 and narrow plantain. 



In Wisconsin the worst weeds are quack grass, Canada 

 thistle, mustard, dock, ragweed, wild carrot in some 

 places, and cocklebur. The worst weeds for Indiana, 

 according to Mr. J. R. Campbell, are white weed in clover 

 and timothy meadows, cocklebur in corn fields, horse 

 nettle, buckhorn, and in the southern part of the state 

 wild garlic, while in Kentucky the star of Bethlehem has 

 become a most pestiferous weed in gardens and fields. In 

 parts of Canada, especially the province of Manitoba, 

 they consider the Canada thistle, perennial sow thistle, 

 wild oats, and marsh elder to be the most troublesome of 

 their weeds. H. L. Bolley, in his account of the weeds of 

 North Dakota, gives the following as some of the most 

 troublesome: Kinghead, Canada thistle, French weed, 

 mustard, and wild oats. Dr. Millspaugh reports the ox- 

 eye daisy, yarrow, broom sedge, and blue thistle as the 

 worst weeds in the northeastern part of West Virginia. 

 The broom sedge here listed is generally a troublesome 

 weed in many parts of Virginia and' other southern 

 states, where it is considered one of the worst of weeds, 

 as it is also so considered in Ohio by Professor Selby. 

 Dr. A. Nelson considers Russian thistle, squirrel-tail 

 grass, cockle, Canada thistle, bull thistle, buffalo bur, 

 prickly lettuce, among the worst weeds of Wyoming. 



