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- 

 Speuce. 



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 found 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. Sallivant (Cat. 1S40.) 



Polygonum virginianum L. 

 Frequent. 



