TABLE OF CONTENTS 



INTRODUCTION : 1 



JUNCAGINACEAE 2 



Triglochin 2 



Key to Species 2 



Triglochin gaspense 2 



Triglochin palustre 2 



Triglochin maritimum 3 



Literature Cited and Selected References 3 



SCHEUCHZERIACEAE 3 



Scheuchzeria 3 



Scheuchzeria palustris 3 



BUTOMACEAE 3 



Butomus 9 



Butomus umbellatus 9 



Selected References 9 



HYDROCHARITACEAE 10 



Vallisneria 10 



Vallisneria americana 10 



Egeria 10 



Egeria densa 14 



Elodea 14 



Key to Species 14 



Elodea nuttallii 14 



Elodea canadensis 15 



Selected References 15 



