86 



- -'-'•- 





Plate 41.— Classification: SYSTEM Lacustrine, subsystem Limnetic, CLASS Aquatic Bed, subclass Rooted Vascular, dominance 

 type Nymphaea odorata, WATER regime Permanently Flooded, water CHEMISTRY Fresh-Circumneutral. Subordinate plants 

 in the Aquatic Bed include bladderworts (Utricularia spp.). Yellow-eyed grass (Xyris smalliana) grows on floating mats of peat 

 along the shore (foreground). Water depth in this 0.8-ha (2-acre) bog lake exceeds 3 m (10 ft). (Washington County, Rhode Island; 

 July 1977; Photo by F. C. Golet) 



