98 THE PO-LYPORACEAE OF WISCONSIN. 



sometimes single. The spots in dried specimens have a smooth, de- 

 pressed appearance. 



The species is quite common in the northern part of the state grow- 

 ing from pine and hemlock stumps and logs. Specimens were collected 

 at Hazelhurst, Star Lake and Shanagolden. At Star Lake a few spec- 

 imens were taken out of a pine stump decayed by Fomes pinicola. 



The largest specimen measures about 12 cm. wide, 5 cm. long and 

 1 cm. thick. Some of the specimens are stipitate, some sessile-dimidi- 

 ate, and some cespitose. In color they are pale yellowish-white, with 

 faint reddish-brown zones and spots. The flesh is pale yellowish- white, 

 brittle when dry. The pores are of the same color, short, angular and 

 small. 



When fresh, the substance is soft, moist and cheesy. The growing 

 margin and pores become spotted with a faint pinkish-flesh color when- 

 ever touched or bruised, and often exude drops of colorless, viscid, 

 tasteless liquid. 



This species seem to be allied to P. epileucus and P. tephroleucus on 

 one hand and to P. sulphureus on the other. 



From P. epileucus and P. tepJiroleucus it may be distinguished by 

 the softer substance, the brownish spots and pits in the surface of the 

 flat uneven pileus. 



Syn. : Polyporus maculatus Peck ; 22, 26, p. 69. 



Polyporus tephroleucus Fries. 



Pileus fleshy-cheesy, triquetrous, obtuse, villous, unequal, gray, with- 

 in white, zonate ; pores round, elongate, obtuse, entire, whitish. 



"Distinguished by its snow-white hymenium and context. The pores 

 are longer than in any other of our white-pored species, one cm. at the 

 maximum. Not uncommon on rotten logs in marshy places where it 

 sometimes extends many centimenters. " Macbride. 



Not very common. One specimen was found at Sparta growing from 

 an old log in a pond, and several small specimens have been collected 

 at Oakfield and Horicon. The largest specimen is about 8 cm. wide, 

 6 cm. long and 8 cm. thick. The pilei are flat, villous when young, 

 more or less glabrate when old, grayish- white.. The pores are even, 

 equal, small, round, as long as the thickness of the pileus. 



The species is allied to P. epileucus, Fr., P. guttulatus Peck, and 

 P. pallescens Fries. The last named is scarcely distinct except that it 

 is "glabrate" ; the others differ in color and in their shorter pores. 



