ROOTED AQUATIC PLANTS IN LIMNOLOOY 



115 



Fig. 7. Crystal Lake, Vilas County, Wis. A clear, soft-water lake of the seepage type in a youthful 

 stage of development and an example of a lake possessing a flora of the "rosette" type. 



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Fig. 8. Midge Lake, Vilas County, Wis. A young bog lake in which the shrubs, AnclroDuda, Cliainac- 



daphne, and Ahuis have invaded the littoral soils and replaced Eriocatdon, GratioJa, and Vtricularia 



resupinaia. These latter are now members of the lake flora. See also Fig. 9. 



