00 NEW YORK STATE MUSEUM 



Polyg-onum hydropiper L. 

 ^martweed 

 Ditches and wet places. Common. July-September. 



Polygonum punctatum Ell. 

 P. acreH. B. K. 

 Water smarttoeed 

 Shores of the river. Frequent. June-October. 



Polygonum virginianum L. 

 Virginia knotweed 

 Damp thickets. Frequent. July-October. 



Polygonum orientale F.. 

 Prince's feather 

 Waste places. Escaped from cultivation. Infrequent. August- 

 September. 



Polygonum aviculare T.. 



Door treed. Ku otgra.s.s 

 In dooryards and along footpaths. Common. June-November. 



Polygonum erectum L. 

 Erect knoticeed 

 Roadsides. Common. July- September. 



Polygonum convolvulus T.. 

 Black bindweed 

 Cultivated and waste grounds. Common. July- September. 



Polygonum cilinode Michx. 

 Fringed hlack hindiveed 

 Infrequent. West of Owego. June- September. 



Polygonum scandens L. 

 CliiiihiiKj fdJ.-iC buclirheat 

 lianks of streams. Common. August-September. 



Polygonum sagittatum L. 

 Arroiv- leaved tear-thumh 

 Swamps and low grounds. Couinion. July-September. 



Polygonum arifolium T.. 

 Hdlbcril-lcared tear-thunib 

 ^larshes. Frequent. July- September. 



