354 Murrill : Polyporaceae of North America 



i. ISCHNODERMA Karst. Medd. Soc. Faun, et Fl. Fenn. 



5: 38. 1879 

 Type : Ischnoderma fuliginosum (Scop.) Murr. 



Hymenophore large, annual, epixylous, sessile ; surface pelli- 

 culose, glabrous : context light-brown, fleshy to slightly corky, 

 friable when dry ; tubes small, thin-walled : spores smooth, hyaline. 



Species: I. fuliginosum (Scop.) Murr. [see Bull. Torrey Club 

 31 : 606, 607. 1904.] 



2. ANTRODIA Karst. Medd. Soc. Faun, et Fl. Fenn. 



5: 40. 1879 



Type : Antrodia mollis (Sommerf.) Karst. 



Hymenophore small, annual, epixylous, sessile or semi-resu- 

 pinate ; surface zonate, encrusted, glabrous : context thin, light- 

 brown, fibrous ; tubes short, firm, thin- walled : spores smooth, 

 hyaline. 



Antrodia mollis (Sommerf.) Karst. 

 Dacdalca mollis Sommerf. Suppl. Fl. Lapp. 271. 1826. 

 Trametcs mollis Fr. Hym. Eur. 585. 1871. 



