16 



Common along roadsides and fences, 

 tures in loamy soil. 



and occasionally in pas 



PLAXTAGIXEAE. 



Plantago major, L. Common Dooryard Plantain. 



This and the following are common dooryard weeds. 



Plantago Kugelii, Decasine. 



Occurring with the other. Plantago lanceolata. L., has not 

 been found in this region. In the South and East it is a trouble- 

 some weed. It has established itself at Madison, Wis. 



AMAEAXTACEAE. 



Amaraiitus retrqflexus, L. Pigweed. 



Common in manured soil, in fields, etc. It is a native of trop- 

 ical America. (?) 



Amarantus albus, L. Tumble Weed. 



Common in black sandy soil. In autumn it breaks off at the 

 root and is driven before the wind. Naturalized from tropical 

 America. (?) 



CHEXOPODIACEAE. 



Ghenopodium album. L. Pigweed. 

 Commou in rich and loose soil. 

 Chenopodium botrys. L. Jerusalem Oak. 

 Dry soil in streets of cities. 



POLYGOXACEAE. 



Bumex acetosella. L. Sheep's Sorrel. 



In gravelly soil and in old fields. It is said that where this 

 plant occurs, the soil is sour (Thaer, 5), and that an addition of 

 lime or manure will drive it away. It is certain that the soil of 

 Western Wisconsin and Southeastern Minnesota contains a great 

 deal of lime. The absence of lime can therefore hardly account 

 for its abundance. 



Bumex crispus, L. Curled Dock. 



More common on high land, pastures, etc. The following. 

 Bumex obtusifolius, L. Bitter Dock, is largely found in low 

 meadows and pastures and is exceedingly troublesome in pre- 



