94 



Plate 47.— Classification: system Palustrine, CLASS Emergent Wetland, SUBCLASS Persistent, water regime Seasonally 

 Flooded Tidal, water chemistry Fresh, SOIL Unknown. Dominant vegetation includes cattail [Typha sp.), grasses 

 {Gramineae), alder [Alnus sp.), and spiraea (Spiraea sp.). (Knox County, Maine; April 1978; Photo courtesy of P. B. Reed) 



