THE POLYPORACEAE OF WISCONSIN. H7 



Polyporus elegans (Bull.) Fries. 



Pileus fleshy, but soon hardened, becoming woody, explanate smooth ; 

 the stipe eccentric, or lateral, glabrate, pallid, becoming abruptly black 

 below, rooting ; pores small, roundish, even, white, becoming yellowish. 



Very common on sticks and twigs buried in the ground or on old logs. 

 Localities: Algoma, Bangor, Wauwatosa, Madison, Elkhorn, Hazel- 

 hurst, Oakfield, Crandon and Shanagolden. The species is variable in 

 shape and size. The largest specimen measured 10 cm. in diameter, 

 and 8 mm. thick; the stipe is 3 cm. long. The longest stipe measured 

 was 10 cm. long and 3 mm. thick. The smallest pileus was 8 mm. in 

 diameter. 



The pileus is smooth, thick becoming thin abruptly at the margin. 

 The shape is variable ; it may be circular and central stiped or irregu- 

 lar with the stipe excentric, the most usual form ; or it may be flabel- 

 liform with the stipe lateral. The color varies from a clear cinnamon 

 brown to a pale grayish-brown. With weathering, the pileus becomes 

 gray or grayish- white. The pores are quite small and not unlike those 

 of P. picipes. 



Distinguished from P. varius and P. picipes by the smooth thickish 

 pileus which becomes abruptly thin at the margin, and by the long, 

 slender stipe. 



12. FISTUUNA Bull. 



The hymenium is formed on the under surface of a fleshy pileus, at 

 first warty and then developed into cylindrical tubes. These tubes re- 

 main free from each other. Somewhat fleshy fungi. 



Superficially resembling a Polyporus, but distinguished by the pores, 

 which are distinct and free from each other ; when young they seem, to 

 be mere warts, but they lengthen and open up forming cylindrical 

 tubes. 



Fistulina hepatica (Huds.) Fries. 



Pileus roundish, dimidiate, or subspatulate, attached by a broad base 

 or substipitate, blood-red, fleshy and soft, streaked internally ; tubes at 

 first pallid, then red; spores broadly elliptical, salmon-color, 0.005 to 

 0.006 mm. by 0.003 to 0.004 mm. Conidia 0.006 to 0.010 mm., by 0.005 

 mm. 



