THE POLYPORACEAE OF WISCONSIN. 69 



Polystictus bif ormis Klotz. 



Imbricate; pileus effuso-reflexed, coriaceous, soft, villose-tomentose, 

 white, zoneless at first, even, then concentrically sulcate ; margin entire 

 acute; pores rather large acute pale wood color, finally lacerate den- 

 tate. 



Well developed specimens of this species were found at Crandon and 

 Ladysmith. The largest measured 2 to 3 cm. in width by 8 to 10 cm. 

 in length. 



Polystictus cinnabarinus (Jacq.) Fries. 



Pileus suberose, convexo-plane, subzonate, rugulose, from pubescent 

 to glabrate, cinnabar-red, fading, within floccose, brighter ; pores round, 

 medium, bright cinnabar. 



Specimens have been collected from Madison, Blue Mounds, Hori- 

 con, Sparta, Hazelhurst, Shanagolden, Crandon, and the Lake Superior 

 region (Cheney). 



Common on hickory, poplar, wild cherry and oak. My largest spe- 

 cimen is about 14 cm. wide, 6 cm. long and 1.5 cm. thick. The tubes 

 are about 4 mm. long. 



Very easily recognized by its bright red or cinnabar color, which 

 weathers to a reddish-gray on top but is persistent below. Young pilei 

 and the growing parts of older ones are very softly pubescent but the 

 older parts become rough with wrinkles and pits and are more or less 

 glabrate. The flesh is soft, pulpy, lighter in color and delicately zoned. 

 The pilei are convex above and plane beneath, dimidiate, sometimes 

 laterally confluent ; margin acute. 



The pores are small, roundish, bright red. The dissepiments not 

 very thick, slightly dentate. In one old specimen the tubes are dis- 

 tinctly stratified. It seems there was a renewal of the hymenium 

 which, however, did not extend entirely to the margin. The tubes in 

 the old layer are 2 mm. long, and in the new, 2.5 mm. 



P. sanguineus L. seems to be the only species that looks very much 

 like this handsome fungus ; it is thiner, less pubescent, has smaller pores 

 and is said to be substipitate. 



This species is often placed in the genus Trametes, but the pores I 

 think show more of the characteristics of Polystictus than of Trametes. 



Syn. : Boletus coccineus Bull. ; 7, tab. 501. 



Pycnoporus cinnabarinus (Jacq.) Karst. ; 13, p. 18; 19, 31, 

 p. 420. 



