72 



Plate 27.— Two habitats are shown here. Classification of nonvegetated zone: system Riverine, subsystem Tidal, CLASS Uncon- 

 solidated Shore, SUBCLASS Mud, water regime Regularly Flooded, WATER CHEMISTRY Fresh-Circumneutral. Classification of 

 vegetated zone: SYSTEM Riverine, subsystem Tidal, class Emergent Wetland, subclass Nonpersistent, dominance type 

 Peltandra virginica, water regime Regularly Flooded, water chemistry Fresh-Circumneutral, soil Mineral. The photo was 

 taken at low tide. (Cecil County, Maryland; July 1972; Photo by V. Carter) 



