55 



Najas flexilis (Willd.) Rostk. & Slender Naiad 



Schmidt 

 Nymphaea advena (Ait.) 

 Potamogeton amplifolius Tuckerm 



Potamogeton crispus L. 

 Potamogeton natans L. 

 Potamogeton pectinatus L. 

 Potamogeton perfoliatus L. 



Spatter-dock 



Large-leaved Pond- 

 weed 



Curled-leaved Pond- 

 weed 



Common Floating 

 Pondweed 



Fennel-leaved Pond- 

 weed 



Clasping-leaved Pond- 

 weed 



Robbins' Pondweed 



Greater Bladderwort 



White Water-crowfoot 



Potamogeton Rohbinsii Oakes. 

 Utricularia vulgaris amencana Gray 

 Ranunculus aquatalis capillaceus 



DC. 

 Vallisneria spiralis L. Eel-grass 



In the ecology of bird life, the plants of this zone gain im- 

 portance by supplying forage for certain of the Ducks (the 

 Wood Duck is the only one that breeds here), the Coot, the 

 Florida Gallinule, and the Pied-billed Grebe. This forage 

 consists of the stems, leaves, and rootlets of the plants, the 

 fruiting parts not yet having been found in the food of any of 

 the birds. Indirectly they supply food by harboring the 

 larvae of many insects which, when adults, are eaten in con- 

 siderable quantities. The presence of fishes, which are the 

 food of the Kingfisher and (to some extent) of the Grebe, is 

 likewise determined by the vegetation and the invertebrate 

 life which it shelters. 



There are no mammals which can be considered strictly 

 typical of this habitat. Although the Muskrat forages along 

 the bottom for molluscs, it is more typical of the next associa- 

 tion. 



The bats which seek their food over the surface of the creeks 

 and the Cove, belong more properly to the woods. Their 

 food, however, is largely the midges and other Diptera, the 

 larvae of which develop in the open-water association. The 

 following have been taken in the marsh : 



