The Bunch-grass Association : page 



The Andropogon scoparius Consocies 295 



Tht Sporoholus lieterolepis-SorgJiastrum iiiitaus Consocies 300 



The Liatris scariosa Association 301 



The Poa cotnpressa Association 303 



The Arctostaphylos-Juniperus Heath Association 306 



The Pine Forest Association ^og 



The Querciis velutina Association 311 



The Blowout Associations 315 



The Associations of the Marsh Habitats 3ig 



The Plankton Association 3ig 



The Chara Association 3 ig 



The Potamogeton Association 3ig 



The Castalia-Nymphaea Association 320 



The Ranunculus aqiiatilis capillaccus Association 321 



The Lemna-Riccia Association 322 



The Menyanthes-Sagitfaria Association 322 



The Carex Association 324 



The Phragmites-Typha Association 326 



The Scirpus validus Association 327 



The Scirpus americanus Association 328 



The Cladiuni mariscoides Association 329 



The Calaniagrostis canadensis Association 330 



The Iris versicolor Association 332 



The Osmunda Association 3^^ 



The Potentilla fruticosa Association 334 



The Liatris spicata Prairie Association 335 



The Juncus torreyi Association 340 



The Thicket Associations : 



The PopiilusSalix-Corniis Thicket Association 340 



The Prunus Thicket Association 342' 



Transects of the Associations 344 



General Conclusions 348' 



Summary 351 



List of the Species of Plants growing on the Beach Area 353 



Bibliography of the more Important Works Consulted 370 



