Preface . . vii 
Explanation of Text . . ix 
Acknowledgements . . xiii 
Abbreviations . . xv 

Alphabetical Entries 
Sp-Syz . . 1 
T . . 181
U . . 362
V . . 379
W . . 451
X . . 483
Y . . 514
Z . . 515

Map of Botanical Regions . . 540 
Glossary of Technical Terms . . 543 
Further Reading . . 553 
Common Names Index . . 561