103 



Plate 58.— Classification: system Palustrine, class Emergent Wetland, subclass Persistent, dominance type Sdr^ms robustus— 

 Scirpus acutus, water regime Semipermanently Flooded, WATER CHEMISTRY Mixosaline, soil Mineral. (Stutsman County, North 

 Dakota; August 1962; Photo by R. E. Stewart) 



