4i6 



George E. Nichols, 



b. THE ASSOCIATION-COMPLEXES OF WELL-DRAINED LAKES AND 



PONDS 



The plants named in the subjoined Hst are characteristic of 

 well-drained lakes and ponds in the highland, growing either in 

 the deeper water or in the shallows along the shore. Extended 

 comment seems hardly worth while, since in their local distribu- 

 tion and ecological relations they conform closely with what has 

 been described for similar areas in the lowland. 



Figure 6o. — Shallow pond in mountains north of Barrasois River; 

 aquatic vegetation and narrow marginal fringe of swamp shrubs. 



Sphagnum cuspidatmn Torreyi 

 Drepanocladus Scndtneri 

 Drepanocladus scorpioidcs 

 Fontinalis sp. 

 Isoetes sp. 



Equisetum fluviatile 

 Sparganium angustifoliu m 

 Potamogefon natans 

 Potamo^eton Oakcsianus 



Carex aquatilis 

 Carex filiformis 

 Carex rostrata 

 Eriocaulon septangulare 

 Nymphaea variegata 

 Castalia odorata 

 Ranunculus Flammula reptans 

 Nymphoides lacunosum 

 Lobelia Dortmanna 



