48 PROCEEDINGS MANCHESTER INSTITUTE 



Prenanthes alba L,. Common 



serpentaria Pursh. Common 



trifoliolata (Cass.) Fernald. Common 



altissima L. Common 



" var. hispidula Fernald. Manchester. 



Hieracium auraiitiacum L. Becoming a pest northward 

 venosum L. Common 



paniculatum L,. Common 



marianum Willd. Manchester. (L. B. Schwarz) Rare 

 scabrum Michx. Common 



canadense Michx. Common 



