200 THE POLYPORAOEAE OF WISCONSIN. 



PLATE XXII. 

 Boletus. 



Fig. 74. Boletus subtomentosus Linn, a, stipe and section of pileus; 6, pores. 



Fig. 75. Boletus radicans Pers. a, entire plant; 6, pores. Devil's Lake, Aug- 

 ust. 



Fig. 76. Boletus Russellii Frost, a, entire plant reduced; 6, pores. 



Fig. 77. Boletus separans, Peck. Crandon, August. 



Fig. 78. Boletus edulls Bull., var. clavipes. Rather small specimen. Devil's 

 Lake, August. 



