Murrill: Polyporaceae of North America 477 



Trametes malicola B. & C. Jour. Acad. Sci. Phila. II. 3 : 209. 



1856. Described from specimens collected by Schweinitz on the 



trunk of an apple-tree at Bethlehem, Pennsylvania, and determined 



by him as P. populinus Fr., being no. 366 in his synopsis. When 



his herbarium was examined by Berkeley and Curtis, this species 



was described as new as follows : 



" Imbricatus, ligneus ; pileis dimidiatis postice decurrentibus 

 subvillosis subzonatis, ligneo-umbrinis ; poris mediis dissepimentis 

 crassis subtomentosis." 



8. BJERKANDERA Karst. Medd. Soc. Faun, et Fl. 

 Fenn. 5: 38. 1879 



Type : Polyporus adustus Fr. 

 Merisma Gill. Champ. Fr. 1 : 688. 1878. (Not Merisma Per- 



soon.) Type : Boletus imberbis Bull. 

 Myriadoporus Peck, Bull. Torrey Club 11 : 27. 1884. Type: 



Myriadoporus adustus Peck. 



Hymenophore annual, epixylous, sessile, anoderm, glabrous, 

 azonate, corky ; context white, tough or woody, not friable when 

 dry ; tubes thin-walled, more or less smoke-colored, mouths poly- 

 gonal ; spores smooth, hyaline. 



The species of Bjerkandera will be treated in a future paper. 



9. TYROMYCES Karst. Rev. Myc. 3 y : 17. 1881 



Type : Polyporus chioneus Fr. 

 Leptoporus Quel. Ench. Fung. 175. 1886. (Not Leptopora Raf. 



1809.) Type : Polyporus tephrolcucus Fr. 

 Oligoporus Bref. Unters. 8:114. pi. J. f. 12-22. 1889. Type: 



Oligoporus farinosus Bref. 



Hymenophore annual, epixylous, sessile, anoderm, azonate, 

 glabrous or nearly so ; context white, fibrous, fleshy to fleshy- 

 tough, rigid and friable when dry ; tubes thin-walled, white or yel- 

 lowish, mouths polygonal ; spores smooth, hyaline. 



The species of Tyrouiyces will be treated in a later number of 



this series. 



10. TRAMETES Fr. Gen. Hymen, n. 1836. 

 Type : Polyporus suaveolens L. 



Hymenophore annual, epixylous, sessile ; surface anoderm, 

 white, azonate ; context white, homogeneous, coriaceous to soft- 



