99 



■i^iWf;- 



Plate 54.— Classification: system Palustrine, class Aquatic Bed, SUBCLASS Rooted Vascular, dominance type Ranunculus 

 trichophyllus, water regime Semipermanently Flooded, water chemistry Oligosaline, soil Mineral. (Stutsman County, North 

 Dakota; August 1966; Photo by R. E. Stewart) 



