93 



Plate 48.— Classification: system Lacustrine, subsystem Littoral, class Emergent Wetland, subclass Nonpersistent, dominance 

 type Nelumbo lutea, water regime Permanently Flooded, water chemistry Fresh-Circumneutrai, SOIL Mineral, special 

 modifier Impounded. Subordinate plants are duckweeds (Lemna spp.) and bald cypress (Taxodium distichum). (Obion County, 

 Tennessee; September 1975; Photo by V. Carter) 



