VASCULAR PLANTS OF OHIO 1S3 



Persiearia hvdropiperoides (Mx.) Small. Mild Smart weed. 

 General. 



990. Persiearia hydropiper (L.) Opiz. Water Smartweed. General. 



From Europe. 



991. Persiearia punctata (Ell.) Small. Dotted Smartweed. General. 



992. Persiearia orientalis (L.) Spach. Prince 's-feather. Lucas, 



Montgomery, Franklin, Hocking, Meigs, Scioto. Native of 

 India. 



993. Tovara virginiana (L.) Raf. Virginia Knotweed. General. 



994. Polygonum aviculare L. Doorweed. General and abundant. 



995. Polygonum buxiforme Small. Shore Knotweed. Wayne County. 



996. Polygonum erectum L. Erect Knotweed. Lake, Richland, 



Franklin, Muskingum, Morgan, Hocking, Athens, Meigs, 

 Warren, Clermont. 



997. Polygoniun ramosissimum jMx. Bushy Knotweed. Lake, Frank- 



lin. Waifs from the West. 



998. Polygonum tenue Mx. Slender Knotweed. Erie County. 



Order, Pi pf rales. 



Saururaceae. Lizard 's-tail Family. 



999. Saururus cernuus L. Lizard 's-tail. General. 



Sul:claSS, CALYCIFLORAE. 



Order, Rosalcs. 



Rosaceae. Ross Family. 

 Suljfamily, rosatae. 



1000. Geum rivale L. Purple Avens. Chami)aign, Geauga. 



1001. Geum canaadense Jacq. White Avens. General. 



1002. Geum flavum (Port.) Bickn. Cream-colored Avens. No speci- 



mens. 



1003. Geum virginianum L. Rough Avens. General. 



1004:. Geum strictum Ait. Yellow Avens. Eastern half of state; also 

 in Preble County. 



1005. Geum vernum (Raf.) T. & G. Spring Avens. General. 



1006. Dasiphora fruticosa (L.) Rydb. Slir-nbby Ciii(|uefoil. Rather 



general. 



1007. Potentilla paradoxa Nutt. Bushy Cinquefoil. Erie County. 



1008. Potentilla argentea L. Silvery Cinquefoil. Portage. Cuyahoga, 



Erie, Licking. 



