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Plate 49.— Classification: system Lacustrine, subsystem Littoral, class Emergent Wetland, subclass Nonpersistent, dominance 

 type Juncus militaris, WATER REGIME Semipermanently Flooded, water chemistry Fresh-Circumneutral, soil Mineral. Subor- 

 dinate plants include common threesquare (Scirpus amerwanus) and pickerelweed (Pontederia cordata). During the spring, emergent 

 vegetation is not evident at this site, and waves break on the gravel shore visible in the foreground. (Washington County, Rhode 

 Island; July 1977; Photo by F. C. Golet) 



