SECTION SPONGIOSUS. 



Fig. 456 



Spongiosus rufescens. 



HETEROPORUS (Fig. 457). The flabelliform or dimidiate form of Poly- 

 porus rufescens. Frequent in Europe. Apparently absent from the United States. 



DISTORTUS (Fig. 458.) A frequent plant in the United States which 

 I believe to be only a distorted form of Polyporus rufescens. Rarely perfect 

 forms are also found in the United States. 



ANTHELMINTICUS. A plant said to be used in India as an anthelminthic 

 is not represented in the museums of Europe by specimens good enough to 

 tell much about its classification. It was compared to rufescens by Berkeley. 



HYSTRICULUS (Fig. 459). Known from a single specimen 

 at Kew from Australia, but strongly marked. Surface with rigid, 

 dense, dark hairs. Flesh white, soft. Pores round, medium, flesh color. 

 Spores probably conidial, globose, hyaline. 



158 



