VASCULAR PLAXTS OF OTTTO 183 



989. Persicaria hydropiperoides (Mx.) Small. Mild Smartweed. 



General. 



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



From Europe. 



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



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



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

 India. 



993. Tovara virginiana (L.) Raf. Virginia Knot weed. 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, ]\Inskingum, Morgan, Hocking, Athens, Meigs, 

 "Warren, Clermont. 



997. Polygonum ramosissiraum ^NFx. Bushy Knotweed. Lake, Frank- 



lin. "Waifs from the "West. 



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



Order, Piperalcs. 



Saururaceae. Lizard 's-tail Family. 



999. Saui urns cernuus L. Lizard 's-tail. General. 



Subclass, CALYCIFLORAE. 



Order. Rosalcs. 



Rosaceae. Ross Familj^ 

 Subfamily, rosatae. 



1000. Geum rivale L. Purjile Avens. Champaign, Geauga. 



1001. Geum canaadense Jacq. "White Avens. General. 



1002. Geum fiavum (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. Shrubby Cinf|uefoil. Rather 



general. 



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



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



Erie, Licking. 



