192 Murrill: Polvpokaceae of North America 



Daedaleopsis Schroet. Krypt. Fl. Schles. 3: 49 2 - l888 - Type: 



Boletus confragosus Bolt. 



Hymenophore epixylous, usually large and annual, sessile, 

 applanate to ungulate ; surface anoderm, glabrous, often zonate : 

 context white or wood-colored, rigid, woody or punky : hymenium 

 normally labyrinthiform, but varying to lamellate and porose in 

 some species : spores smooth, hyaline. 



Species : A. quercinus L., A. juniperinus Murr., A. confragosus 

 (Bolt.) Murr., A. Aesculi (Schw.) Murr., A. deplanatus (Fr.) Murr. 

 [See Bull. Torrey Club 32 : 83-95. 1905-] 



2. CERRENA S. F. Gray Nat. Arr. Brit. PI. 1 : 649. 1821 



Type : Boletus unicolor (Bull.) Bolt. 

 Phyllodontia Karst. Hedwigia 22: 163. 1883. Type: Phyllo- 



dontia Magnusii Karst. 



Hymenophore small, epixylous, sessile, conchate, annual ; sur- 

 face anoderm, hairy, zonate or sulcate ; context thin, white, fibrous, 

 flexible ; hymenium at first labyrinthiform, soon becoming irpici- 

 form from the splitting of the dessepiments ; spores smooth, 

 hyaline. 



Species : C. unicolor (Bull.) Murr. [See Bull. Torrey Club 32 : 



97-99. 1905-] 



3. LENZITES Fr. Gen. Hymen. 10. 1836 



Type: Dae dale a betulina (L.) Fr. 



Hymenophore small, annual, epixylous, sessile, conchate : sur- 

 face anoderm, usually zonate and tomentose ; context white, 

 coriaceous, flexible ; hymenium lamellate, the radiating gill-like 

 dissepiments connected transversely at times, especially in youth ; 

 spores smooth, hyaline. 



Species : L. bettdina (L.) Fr., L. eubensis B. & C. [See Bull. 



Torrey Club 32 : 95-97. 1905.] 

 New York Botanical Garden. 



