478 ANNUAL REPORT 



In dooryards, and very abundant in dry fields. A weed in 

 Europe. 



COMPOSITAE. 



Erigeron annuus, Pers. Tall Daisy. 



Common in waste places, and in moist soil. 



Erigeron Canadensis, L. Horseweed. 



In fields and waste places. Very abundant, especially in loose 

 soil. The Tall Daisy and Horseweed are extensively naturalized 

 in Europe. (Eatzeburg, etc.) 



Erigeron Strigosum, Muhl. Daisy Fleabane. 



The plant is frequent in dry clay soil, but not as "weedy" as- 

 either of the above. 



Gnaphalium decurrens, Ives. Common Everlasting. 



In old dry fields. 



Inula helenium, L. Elecampane. 



Thoroughly established in the northern part of Vernon Co.,. 

 Wis. , along roadsides. 



Ambrosia artemisi?efolia, L. Common Ragweed. 



Abundant along roadsides and fields, especially where the soil 

 has been loosened. 



Ambrosia trifida, L. Great Ragweed. 



More troublesome than the preceding, especially common in 

 rich bottom land. It is a course plant from eight to ten feet 

 high, and when numerous growing, crops have little chance to 

 develop. 



Xanthium Canadense, Mill. Cockle-bur. 



Along roadsides in loose sandy and gravelly soil. Becoming- 

 more numerous. A very troublesome weed in Russia. (Kop- 

 pen, 2.) 



Bidens frondosa, L. Common Beggar Ticks. 



Along roadsides and in waste places. 



Anthemis Cotula, L. Mayweed. 



Common in dooryards, along roadsides, and in waste places ou 

 rather hard soil, preferably clay or loam. Also troublesome in 

 Europe. (Thaer, 3 and Ratzeburgf, 1.) 



Achillsea millefolium, L. Yarrow. 



In poor and dry pastures, and along roadsides. Its presence 

 is an indication that the soil is rather poor. The plant is widely 

 distributed across the continent of America, and also in 

 Europe. 



Chrysanthemum leucanthemum, L. Daisy. 



