PLANTS WITH ONLY THREADLIKE OR RIBBONLIKE UNDERWATER LEAVES grow 

 sparsely or thickly in shallow inland fresh waters in the North. A few 

 kinds also grow inland in the South, a few in fresh and brackish waters 

 along the Atlantic Coast. The stems of a few kinds are often too far 

 under water to be clearly seen; stems of the others grow nearly to the 

 surface and sometimes float just beneath it. The leaves are stalkless 

 and have fine, closely placed, lengthwise-running veins. The leaves 

 of most kinds are flimsy and often broken from wear and decay. 



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



ALGA PONDWEED 

 (Potamogeton confervoides) 



Wisconsin, and from 

 Newfoundland to Pennsylvania. 



Leaves are in bunches 

 and are flimsy and hairlike. 

 Seed heads are very long- 

 stalked. 



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