WATER-STARGRASS 

 (Heteranthera dubia; formerly 

 Zosterella dubia) 



Washington to Montana, California 

 and Arizona; and North Dakota to 

 Quebec, Texas and Florida. 



Stems are only a little wider than 

 thick. Short plants sprawling on wet 

 mud grow and bloom as well as long ones 

 do in water. 



Resembles Flatstem Pondweed but 

 has leaves without a noticeable midvein 

 and with a base that makes a sheath 

 around the stem; and each yellow flower 

 produces a slender pod which contains 

 tiny seeds. 



RIBBONLEAF PONDWEED 

 (Potamogeton epihydrus ; 

 includes tennesseensis) 



Alaska to Montana ^ 

 California and Colorado; and 

 Manitoba to Quebec, Iowa and 

 Georgia; particularly in 

 slow streams. 



Underwater leaves are 

 ribbonlike and have a light- 

 colored center stripe. 

 Usually there are floating 

 leaves (see page 9). 



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