OF ARTS AND SCIENCES. 



47 



Tanacetum vulgare L,. 

 Artemisia vulgaris L. 

 Tussilago Farfara L. 



Petasites palmatus (Ait.) Gray. 



Manchester. 



Erechtites hieracifolia (L.) Raf. 



Senecio aureus L,. 



Arctium Lappa L. Sandwich. Tamworth 



minus Bernh. 

 Cirsium lanceolatum (L.) Hill. 



muticum Michx. 



pumilum (Nutt.) Spreng. 



arveiise (L.) Scop. 



palustre (L,.) Scop. East Andover. 

 Centaur ea nigra L. 

 Cichoriuni Intybus L. 

 Krigia Virginica (L.) Willd. 

 Leoiitodon autumnalis L. 

 Tragopogon porrifolius L,. 



pratensis L. 



Taraxacum officinale Weber. 

 erythrospermum Andrz. 



Sonchus arvensis L. 

 oleraceus L. 



asper (L.) Hill. 



Lactuca scariola L., var. integrata Gren. & Godr. 



Recently introduced 



canadensis L. Common 



spicata (Lam.) Hitchc. Common 



Common 



Common in waste places 

 Not common 



Concord. Rare 



Common 

 Common 

 Not common 

 Common 

 Common 

 Common 

 Common 

 Common 

 (G. W. Holt} 



Occasional 



Roadsides. Not common 



Common 



Rare? 



An occasional escape 

 An occasional escape 



Common 

 Not rare 



Becoming common 



Rather common 



Rare? 



