12 



it and the followiug are very poisonous, they ought to be men- 

 tioned 



Cicuta niaculata, L. Water Hemlock. 



Grows in marshes and swamps. 



Peucedanum sativum, Benth. & Hooker. Wild Parsnip. 



Common in and about gardens, especially where Parsnip cul- 

 ture has been carried on, rapidly spreading. 



Daucus carota, L. Wild Carrot. 



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

 Europe. 



C03IPOSITAE. 



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' 7 as- 

 either of the above. 



Gnaphalium decurrens, Ives. Common Everlasting. 



In old dry fields. 



Inula h el en i urn, L. Elecampane. 



Thoroughly established in the northern part of Vernon Co. r 

 Wis., along roadsides. 



Ambrosia artemisiaBfolia, L. Common Eagweed. 



Abundant along roadsides and fields, especially where the soil 

 has been loosened. 



Ambrosia trifida, L. Great Eagweed. 



More troublesome than the preceding, especially common in 

 rich bottom land. It is a coarse 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. Dr. Gray holds that what has commonly passed 

 for Xanthium strumarium in this country is distinct, and should 

 be referred to Xanthium canadense. Xstrumarium is sparingly 

 naturalized in this country and occurs in barnyards and culti- 

 vated fields. In Europe it is troublesome, especially in Eussia. 

 (Koppen, 2.) 



