184 GEOLOGY OF OHIO. 



Polygonum cilinode Mx. 



" General," J. S. Newberry (Cat.) ; Lorain Co., A. A. Wright (Cat.) 



Polygonum convolvulus L. Black Bindweed. 

 Common. 



Polygonum dumetorum scandens (L.) Gray. Climbing False Buckwheat. 

 Frequent. 



Polygonum emersum (Mx.) Britt. (P. muhlenbergii Wats.) 



Painesville and Columbus, Wm. C. Werner; Licking Co., H. L. Jones (Cat.) 

 Fairfield Co., E. V. Wilcox, S. Renshaw. 



Polygonum erectum L. 

 Common. 



Polygonum hartwrightii Gray. 



Leib's Island (Licking Reservoir) H. L. Tones (Cat.); Springfield, Mrs. E. J- 

 Spence. 



Polygonum hydropiper L. Common Smartweed or Water-Pepper. 

 Common. 



Polygonum hydropiperoides Mx. Mild Water-Pepper. 

 Common. 



Polygonum lapathifolium L. 



Lake Co., W. C. Werner; Licking Co., H. L. Jones (Cat.) ; Columbus, Aug. D. 

 Selby; Cincinnati, Joseph Clark (Cat.) 



Polygonum lapathifolium incarnatum Wats. 



Lorain Co., A. A. Wright ( Cat.) ; Painesville, W. C. Werner; Licking Co., H. L- 

 Jones (Cat.) 



Polygonum orientale L. 



Occasionally fouad escaped from cultivation. 



Polygonum pennsylvanicum L. 

 Common. 



Polygonum persicaria L. Lady's Thumb. 

 Common. 



Polygonum ramosissimum Mx. 



Painesville, O. Hacker; Lake Shore, J. S. Newberry (Cat.); Cleveland H. C. 

 Beardslee (Cat.) 



Polygonum sagittatum L. Arrow-leaved Tear-thumb. 

 Common. 



Polygonum tenue Mx. 



Central Ohio, W. S. Sullivant (Cat. 1840.) 



Polygonum virginianum L. 

 Frequent. 



