Murkill: Polyporaceae of North America 485 



Species : P. hydniceps B. & C, P. scabriceps B. & C, P. virga- 

 tus B. & C, P. ddicatus B. & C, P. dibaphus B. & C, P. poly- 

 poms (Retz) Murr., P. Tuba B. & C, P. craterellus B. & C, P. 

 Acicula B. & C, P. discoidcus B. & C, P.phaeoxanthus B. & Mont., 

 P. colnmbicnsis Berk., P. obolns Ell. & Macbr., P. aevudans B. & 

 Q., P. aradaridlns Murr., /l arcidarius (Batsch) Fr., P. variiporus 



Mont 



fi- 



P. arcidariforinis Murr. [See Bull. Torrey Club 31 : 29-44 

 1904 ; and Torreya 4 : 150,151. 1904 



Synopsis of the Polyporeae witli bright-colored context 



L 



Hymenophore sessile or subsessile. 

 Pores yellow. 



Context thick and fleshy, plants very large. I. Laeiiporus. 



Context thin ; plants small. 2. Flaviporellns, 



Pores red. 



Context very soft and spongy, tubes large and irregular. 3. Aurantipoi'eUns 

 Context firm, tubes small. 



Surface anoderm, tubes fragile. 



Tubes orange-colored, becoming dark and 



resinous on drying. 4. Aurantiportts. 



Tubes remaining orange- colored, or fading 

 slightly. 



5. Pycnoporellus, 



Surface pelliculose, tubes firm and regular, 6. Pycnoporns, 



Hymenophore distinctly stipitate ; context yellow. 7. Phaeoiopsis, 



I. LAETIPORUS Murr. Bull. Torrey Club 31 : 607. 1904 



Type : Agaricus spcciosus Batarr. 



Hymenophore annual, epixylous, fleshy, anoderm, cespitose- 

 niultiplex ; context cheesy to fragile, light-colored, tubes thin- 

 walled, fragile, bright-yellow, mouths irregularly polygonal ; spores 

 smooth, hyaline. 



Species : Z. speciosus (Batarr.) Murr, [See Bull. Torrey Club 



31 : 607, 608. 1004, 



2. Flaviporellus gen. nov. 



r 



Type : Polyporus Splitgerberi Mont. 



Hymenophore small, annual, epixylous, sessile or substipitate, 

 flabelliform, yellow throughout ; surface anoderm, margin thin ; 

 context very thin and friable ; tubes small, thin-walled, fragile ; 

 spores smooth, hyaline or yellowish. 



