THE POLYPORACEAE OF WISCONSIN. 107 



Specimens from Horicon and Blue Mounds. Largest specimen 12 

 <?m. 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. : Glolifomes graveolens (Schw.) Murr. ; 19, 31, p. 424. 

 Polyporus conglobatus Berk. 



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

 p. 20 



