CONTENTS 



Fas« 



Acknowledgments ii 



Introduction 1 



Glossary 1 



Main keys 15 



Key to groups 15 



Key to Group A 15 



Key to Group B 24 



Key to Group C 25 



Key to Group D 28 



Key to Group E 38 



Key to Group F 47 



Introduction to catalog 66 



Catalog of aquatic plants 67 



Key to Alismaceae 72 



Key to Gramineae 76 



Key to Cyperaceae . 84 



Principal works cons^ilted in compilation of guide 140 



Index . 141 



in 



