HIGHER PLANTS 



Occurrence. — In quiet shallows. Blooms July-October. 

 Height, 2-3 feet. Generally distributed in eastern states and 

 westward but rare near the Atlantic coast. 



Buckwheats, Smartweeds, Knotweeds — Polygonacece 



Water smartweed, Polygonum amphibium. — Water smart- 

 weeds (Fig. 73) have pink or rose-colored flowers sometimes 



Fig. 73. — Water smartweed, Polygonum amphi- 

 bium. 



very conspicuous by their abundance. The plants grow 

 near shore, in quiet shallows where their smooth, shining 

 leaves float upon the surface. Varieties and closely allied 



89 



