ISO THE POLYPORACEAE OF WISCONSIN. 



PLATE XII. 

 Polyporus. 



Fig. 40. — Polyporus sulphurous (Bull.) Fr. Much reduced. On oak, Madison, 



August. 

 Fig. 41. — Polyporus anax Berk. Much reduced. Madison, August. 

 Fig. 42. — Polyporus ovinus (Fr.) Berk & Curt. On sandy ground among 



scrub pine. The Dells, September. 

 Fig. 43. — Polyporus frondosus Fr. Crandon, August. 



