The boletes of Michigan, by Alexander H. Smith and Harry D. Thiers.

CONTENTS
Page
Introduction................................. 1
The Spores................................. 4
The Hymenium............................... 9
The Hymenophoral Trama.......................... 10
The Structure of the Pileus..................... 11
Habitat Relationships of Boletes.................. 13
General Comments on Distribution................ 15
Generic Segregates from Boletus and Their Relationships... 17
The Boletaceae Chevalier............................. 26
Gyroporus Quelet.............................. 28
Suillus S. F. Gray, emended by Smith & Thiers............. 34
Fuscoboletinus Pomerleau & Smith.......................... 75
Tylopilus Karsten............................... 91
Leccinum S. F. Gray............................ 126
Boletus Fries................................. 221
Pulveroboletus Murrill........................... 379
Boletellus Murrill.............................. 381
Strobilomyces Berkeley.......................... 390
Boletinellus Murrill............................. 394
Gastroboletus Lohwag............................... 396
Appendix................................. 398
Edibility................................. 407
Bibliography................................. 415
Illustrations.................................. 419
Index................................. 421