MURRILL : POLYPORACEAE OF NORTH AMERICA 189 



Although I have not been able to examine the plants described 

 above, there seems to be little doubt that they are referable to A. 

 Pilotae. 



5. Pycnoporellus gen. no v. 



Type: Polyporus fibrillosus Karst. 



Hymenophore annual, epixylous, sessile, dimidiate, simple or 

 imbricate, reddish or orange-colored throughout ; surface anoderm, 

 margin thin ; context thin, friable ; tubes thin-walled, fragile, at 

 length lacerate ; spores smooth, hyaline or pale yellowish. 



Pycnoporellus fibrillosus (Karst.). 

 Polyporus fibrillosus Karst. Sydv. Finl. Polyp. 30. 1859. 

 Poly ponts aurantiacus Peck, Rep. N. Y. State Mus. Nat. Hist. 



26: 69. 1874. 

 Inonotus fibrillosus Karst. Bidr. Finl. Nat. och Folk 37 : 72. 1882. 



In 1876 Karsten considered this species synonymous with 

 Polyporus vulpinus Fr., but later said the two were very different. 

 According to Bresadola, Ochroporus lithuanicus Blonski (Hedwigia 

 281. 1889) is a true synonym of P. fibrillosus. 



This species is rarely found in Asia, Europe and northern 

 North America on decaying logs of fir, spruce and other conifers. 

 Its bright colors make its discovery easy, while the fragile tubes 

 and rigid, friable context distinguish it readily from Pycnoporus 

 cinnabarinus. 



Finland, Karsten; Canada, Macoun ; New York, Peck; Ver- 

 mont, Burt ; Colorado, Bethel ; Oregon, Carpenter. 



6. PYCNOPORUS Karst. Rev. Myc. $ : 1 8. 1881 

 Type : Boletus cinnabarinus Jacq. 



Hymenophore annual, sometimes reviving, epixylous, sessile, 

 dimidiate, simple or imbricate, rarely pseudo-stipitate ; surface 

 anoderm, slightly pelliculose at times, zonate or azonate, bright or 

 dull red ; context red, soft-corky to punky ; hymenium concolor- 

 ous, tubes small, firm, thin-walled ; spores smooth, hyaline. 



Species : P. cinnabarinus (Jacq.) Karst., P. sanguineus (L.) 

 Murr. [See Bull. Torrey Club 31 : 420, 421. 1904.] 



7. Phaeolopsis gen. no v. 

 Type : Polyporus Verae-crucis Berk. 

 Hymenophore annual, expixylous, stipitate ; surface azonate, 



