540 



POLYGONACE.E. 



POLYGONUM CONVOLVULUS (Climbing Persicaria). 



frequent. So different are the forms assumed by this 

 plant when growing in the water and on land, that the 

 varieties might well be taken for two distinct species. In 

 the water, the stems are 2 3 feet long, being supported 

 by long-stalked, floating, smooth leaves ; on land, the 

 stems are about a foot high, and the leaves narrow and 

 rough. In both forms of the plant the spikes of flowers 

 are rose-coloured and handsome. Fl. July September. 

 Perennial. 



7. P. Persicaria (Spotted Persicaria). Stem erect, 

 branched ; leaves narrow, tapering, often spotted ; floivers 



