PLANTS OF ONONDAGA COUNTY 193 



MUTicus — Pers., 1807. (Cnicus muticus — Pursh, I8I4.) 



Swamp Thistle. 

 Common. Swamps and banks of streams. Pleasant 

 Beach, July, 1898. 



ARVENSIS — Robe, 1777. (Cnicus arvensis — Hoffm., 



1804.) Canada Thistle. 

 Common everywhere. A very troublesome weed. Road- 

 side, July, 1904. 



