S2 



»■.*•«**»-..■-.-.». 



Plate 35.— Classification: system Palustrine, class Aquatic Bed, SUBCLASS Vascular, water regime Semipermanently 

 Flooded, water CHEMISTRY Oligosaline, soil Mineral. The dominant plant is white water crowfoot {Ranunculus tricho- 

 phyllus). (Stutsman County, North Dakota; August 1966; Photo courtesy of R. E. Stewart) 



