CONTENTS 



Page 



INTRODUCTION 1 



METHODS AND MATERIALS 1 



Field Collections 1 



Specimen Preparation 2 



Preparation of Key . 2 



Discussion „ . . . „ 2 



GENERA INCLUDED IN KEY BY FAMILY 3 



KEY TO SOME SHRUB WOODS NATIVE TO THE 



NORTHERN ROCKY MOUNTAINS . . . 4 



PHOTOMICROGRAPHS AND SYNOPSES OF CHARACTERS 



USED IN KEY 7 



DIAGRAMS OF WOOD CHARACTERS 66 



GLOSSARY 69 



REFERENCES 72 



SPECIES INDEX 73 



