198 THE POLYPORACEAE OF WISCONSIN. 



PLATE XXI. 

 Boletus. 



Fig. 70. — Boletus alutaceus Morg. a, section showing flesh and pores. The 

 Dells, &, pores; c, pileus, younger specimen. Dorward's Gorge, 

 September. 



Fig. 71. — Boletus auriporus Peck. Ladysmith, August. 



Fig. 72. — Boletus pallidus Frost, a, entire plant; 6, pores. 



Fig. 73. — Boletus chrysenteron. a, pileus; b, pores. Ladysmith, August. 



