CONTENTS 



Prefatory Note vii 



Preface ix 



Introduction 1 



Subclass EXOSPORE^ 15 



Subclass MYXOGASTRES 17 



Order PHYSARALES 18 



Order STEMONITALES 144 



Order LICEALES 203 



Order TRICHIALES 247 



Supplementary Notes ....... 304 



Appendix: Names Not Recognized in Text . . . 307 



Bibliography 313 



Index 323 



Plates 341 



50496 



