OF ARTS AND SCIENCES. 21 



Polygonacese 



Rumex crispus L. Common 



obtusifolius L. Common 



Acetosella I,. Common 



Polygouum aviculare I,. Common 



erectum L. Rare 

 ' lapithif olium I,. 

 amphibium L. 



Muhleiibergii (Meisn.) Wats. Not rare 



pemisylvanicum Iv. Common 



Careyi Olney. Common 



Hydropiper L. Common 



acre HBK. Common 



orientale L. An occasional escape 



Persicaria Iy. Common 



hydropiperoides Michx. Common 



arifoliuni L. Common 



sagittatum 1^. Common 

 Convolvulus Iv. 

 ciliiiode Michx. 



scaiideus L,. Common 



cuspidatuiii Sieb. & Zucc. A recent immigrant 



Fagopyrum esculeiituiii Moench. A common escape 



Polygoiiella articulata (Iy.) Meisn. Common 



Cheiiopodiacese 



Chenopodium ainbrosioides 1^. On dumping grounds 



Botrys Iy. On dumping grounds 



hybridum L. Manchester. (F. W. B.) Rare? 



album L. Common 



