36 THE POLYPORACEAE OF WISCONSIN. 



Quite common on various woods. Localities: Florence (Miss Riley) ; 

 Lincoln County (Dr. F. S. Forbes), on hemlock logs; Lake Superior 

 region (Cheney) ; Crandon, Ladysmith, Shanagolden, Star Lake, Hori- 

 con, and Madison. The specimens collected at Horicon were growing 

 on a maple stump, and the Madison specimens on an oak stump. In 

 the northern part of the state the species usually grows on hemlock or 

 tamarack. 



Our largest specimen is about 30 cm. wide, 17 cm. long and 2.5 cm. 

 thick. The specimens are dimidiate-sessile, laterally stipitate, or ap- 

 parently excentrically stiped. In all cases where the stipe is excentric 

 it is found that the pileus has grown backward surrounding a lateral 

 stipe, thus making it seem excentric. 



The context is made up of two layers, both soft, velvety-fibrous, but 

 the upper one firmer and much lighter in color than the lower one 

 next to the tubes. The flesh is comparatively thin. The pilei are cov- 

 ered by a dark-red shining crust. In one specimen it is considerably 

 wrinkled and more or less concentrically sulcate, its margin wavy, 

 acute and turned down. All of my specimens are stiped except two 

 found on a maple stump ; these are dimidiate, sessile and stratified. All 

 of the others are unstratified. 



The pores are small, equal, varying in length from 1 to 2 cm. In 

 the larger and older specimens the color of the tubes is dark cinnamon, 

 and in the younger ones it is paler. 



The context is of the same soft floccose consistency as in F. applan- 

 atus and F. reniformis except that it is a little lighter in color. The 

 tubes also are very much the same as in these species but lighter in 

 color. The species is very easily recognized by its red laccate crust. 



Murrill (19, 29, p. 602), following the lead of Patouillard and Que- 

 let, places this species in the genus Ganoderma, formed by Karsten in 

 1899 for Fomes lucidus, based on the laccate pileus and stipe. Under 

 this genus Murrill lists the following related species: G. parvidum 

 Murr., G. tsugae, Murr., G. pseudoooletus (Jacq.) (this is F. lucidus), 

 G. sessile Murr., G. Oerstedii (Fries), G. zonatum Murr., and G. suca- 

 tum Murr. 



Syn. : Ganoderma pseudoboletus (Jacq.) Murr.; 19, 29, p. 602. 

 Polyporus lucidus (Leyss.) Fries; 28, p. 442. 

 Polyporus laccatus Pers. ; 23, 2, p. 54. 

 Boletus variegatus Schaeff . ; 27, tab. 263. 



