The North American species of Psathyrella.

THE NORTH AMERICAN SPECIES OF PSATHYRELLA
ALEXANDER H. SMITH
TABLE OF CONTENTS
I. Introduction.................................................................. 1
H isto ry................................................................... 1
Study T echniques......................................................... 5
M icroscopic features...................................................... 10
Substrate relationships and ecology......................................... 21
Phytogeographical considerations.......................................... 23
R elationships to other genera.............................................. 25
Evolution within Psathyrella............................................... 26
A cknow ledgm ents......................................................... 27
II. Taxonomic Treatment (Species 1-398).......................................... 30
Key to Subgenera of Psathyrella........................................... 30
Subgenus Panaeolina...................................................... 31
L acrym aria..................................................... 34
P sathyroides.................................................... 42
M ycophila...................................................... 60
Pseudostropharia................................................ 61
Sect. Pseudostropharia...................................... 61
Spintrigerae........................................... 77
C andolleana.................................................... 80
Sect. C andolleana........................................... 81
Fragilissim ae.......................................... 92
P annucia....................................................... 102
Sect. Appendiculatae........................................ 102
P annucia.............................................. 180
H om ophron.................................................... 237
Sect. H om ophron........................................... 237
C ystidiosae............................................ 246
Subgenus Psathyrella...................................................... 260
Sect. A tom atae............................................ 260
Subatratae............................................ 271
U m bonatae............................................ 291
Psathyrella............................................ 305
F atuae................................................ 346
O btusatae............................................. 371
Cystopsathyra.............................................. 419
Conocybella............................................... 420
Excluded Species......................................................... 421
III. Literature Cited............................................ 422
Appendix I. Additional Species of Psathyrella (399-414)............................ 425
II. T ext Figures......................................................... 445
III. P lates................................................................ 526