North American species of Mycena.

CONTENTS
PAGE
PREFACE............................. vii
INTRODUCTION.......1................
Definition of Mycena................. 2
History of the Genus in North America........... 4
Summary............................ 6
Acknowledgments........................... 7
DIAGNOSTIC CHARACTERS OF THE SPECIES........... 10
Seasonal Occurrence...................... 10
Habit and Habitat.......................10
Size and Stature of Carpophores..14
C olor.............................. 14
Macroscopic Characters of the Surface of Both Pileus and
Stipe.............................16
Lamellae............... 19
Flesh................................20
Latex......................... 22
Macroscopic Characters of Dried Specimens......... 22
Microscopic Characters..................... 23
Spores...................23
Basidia......................... 25
Cystidia....................... 25
Structure of Gills and Pileus.......... 28
Iodine Reactions of the Flesh..................... 29
Viscidity of the Stipe............... 29
TECHNIQUE AND MATERIAL EXAMINED........... 31
Field W ork...................... 31
Laboratory Technique..................... 33
Chemical Tests......................... 34
Material Examined...................... 35
SUBDIVISIONS OF MYCENA................... 37
Classification into Stirpes................ 38
KEY TO THE SUBGENERA OF MYCENA........... 43
SUBGENUS PSEUDOMYCENA................... 44
Key to Sections........................ 44
Section Tenerrimae....................... 45
Section Basipedes.................... 50
ix