PLANTS WITH ONLY OVAL, OBLONG, OR LANCE-SHAPED UNDERWATER LEAVES 

 grow sparsely or thickly in shallow inland fresh waters in the North. 

 Illinois Pondweed also grows inland in the South, Redhead-grass also in 

 fresh and brackish waters along the Atlantic Coast. The stems grow 

 nearly to the surface of the water and sometimes float just beneath it. 

 Their flimsy leaves are stalkless or short-stalked and have fine, 

 closely placed, lengthwise-running veins. The leaves are often broken 

 from wear and decay. 



The pictures of the upper parts of stems are side views. 



REDHEAD- GRASS 

 (Potamogeton perfoliatus; 

 includes richardsonii) 



Fresh water inland from 

 Alaska to Quebec, California, 

 Indiana and New Jersey; and 

 fresh and brackish water 

 along the Atlantic Coast. 



Upper part of stems is 

 usually straight. Leaves vary 

 from oval and flat to lance- 

 shaped and puckered. They 

 have a deeply-notched base and 

 a blunt tip. The blunt-backed 

 seeds are about 1/8 inch long. 



Resembles Whites tern Pond- 

 weed but has smaller leaves 

 with deeper notched base, 

 short-stalked seed heads and 

 smaller seeds. 



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