﻿180 Nichols: The vegetation of Connecticut 



the bladderworts (species of Utricularia), Ceratophyllum demersum, 

 and sometimes Ranunculus aquatilis, which are free floating and 

 entirely unattached to the substratum. These usually grow near 

 the surface and may be very abundant in sheltered coves. The 

 pondweed zone, and the succeeding zones as well, may be broad 



lies (mostly Castalia odorata) at Round Pond, North Ston- 

 ington. 



or narrow, according as the bottom of the lake slopes gently or 



In the absence of competition submersed aquatics develop best 

 in shallow water, but as soon as the bottom has been raised high 



