THE POLYPORACEAE OF WISCONSIN. 107 



Specimens from Horieon and Blue Mounds. Largest specimen 12 

 cm. long and wide, 1.5 cm. thick. 



Polyporus graveolens Schweintz (Plate XIII, fig. 44). 



Corky or woody, extremely hard, very closely imbricated and con- 

 nate forming a subglobose or polycephalous mass. Pileoli innumer- 

 able, inflexed, appressed, plicate, brown. Pores concealed, very mi- 

 nute, round, pale brown ; dissepiments thick and obtuse. In woods, on 

 old dead trunks. 



As I have not seen any fresh specimens of this species, I subjoin Mr. 

 Morgan 's observations : ' ' This remarkable fungus consists of innumer- 

 able pileoli forming a subglobose or elongated mass 3 — 6 inches in di- 

 ameter and often many inches in length especially on standing trunks. 

 "When fresh and growing it has a varnished or resinous appearance and 

 often purplish or reddish tints with a paler margin. Substance within 

 ferruginous, rather soft and floccose, but covered by a very hard brown 

 crust. The pores are brown, but lined by an extremely minute, white 

 pubescence. Pileoli so closely imbricate and appressed as almost to en- 

 tirely to conceal the pores. I am unable to separate from this P. con- 

 globatus of Berkeley; this latter, Fries states to be a species of Trametes 

 (Nov. Symb., p. 67) while he refers Polyporus graveolens to the Meris- 

 moidii (1. c. p. 62.) It is called "Sweet Knot" by the people, but I 

 am unable to verify the poplar notion concerning the wonderful fra- 

 grance perceptible at a great distance from the tree on which it grows. 

 When fresh it has a strong disagreeable odor, as described by Schwein- 

 itz." 



Localities: Mauston (Dodge). This specimen is about 7cm in di- 

 ameter. The pileoli are very closely imbricated and measure about 

 1 to 2 cm. in width and 2 to 2.5 cm. in length. They are glabrate, 

 smooth, and covered with a hard, dark-brownish crust. The interior 

 is hard ferruginous-brown, floccose. The tubes are very small and 

 short. The specimen gives out a faint sweet odor. 



The distinguishing characteristics are the closely imbricated pilei 

 forming a more or less globular mass, the short pores and the sweet 

 odor of the substance. 



Syn. : Globifomes graveolens (Schw.) Murr. ; 19, 31, p. 424. 

 Polyporus conglobatus Berk. 



Fomes graveolens (Schw.) Cooke.; 11, 13, p. 118 (1884) ; 15, 

 p. 20 



