SPERMATOPHYTA. 41 



Polygonum (Tourn.) L. Knotweed. 



aviculare L. Common, in waste places, 



erectum L. Common, by waysides, 



tenue, Michx. 



Worcester. Mr. T. E. N. Eaton, 

 lapathifolium L. 



Templeton. Mr. P. Blodgett. 

 amphibium L. 



North Worcester. 

 Muhlenbergii (Meisn.) Wats. 



North Worcester. 

 pennsylvanicum L. 



Royalston. Mr. T. E. N. Eaton. 

 Careyi Olney. 



Southbridge. Mr. R. N. Harper. 

 hydropiper L. Common Smartweed. 



In moist waste places, common. 

 acre HBK. Water Smartweed. 



In wet places, common. 



orientale L. Prince's Feather. Escaped from gardens. 

 Persicaria L. Lady's Thumb. 



In waste places, Prof. G. E. Stone. 



virginicum L. In thickets, 



arifolium L. Halberd-leaved Tear-thumb. 



In low ground, 

 sagittatum L. Arrow-leaved Tear-thumb. 



In low grounds, common. 

 Convolvulus L. Black Bindweed. 



Worcester. Mr. T. E. N. Eaton. 



cilinode Michx. In rocky places, 



scandens L. Climbing False Buckwheat. 



Gardner. Mr. T. E. N. Eaton. 



