MURRILL : POLYPORACEAE OF NoRTH AMERICA 3G0 



7. PYROPOLYPORUS Murr. Bull. Torrey Club 30 : 109. 1903. 



Type : Boletus igniariits L. 

 Mison K^2A\s. Fam. 2 : 10. 1763. Not associable with a binomial 



species. 



//. 



Agaricon K^-3.x\s, Fam. 2: 10. 1763. Y^ot Agaricus L. 1753. 



llinus Quel. Ench. Fung. 17 

 Type : Boletus igniariiis L, 



urnefort's//. JJj). 



1 886. Not Pkdline Poir. 1826. 



Hymenophore large, perennial, epixylous, sessile, ungulate or 

 applanate ; surface sulcate, usually anoderni and often rough or 

 rimose : context woody or punky, brown, rarely dark-red ; tubes 

 brown, cylindrical, stratose, usually thick-walled : spores smooth^ 

 ferruginous, rarely hyaline. 



P. igniariits (L.) Murr., P, fulvus (Scop.) Murr., P. 

 irr., P. Calkhisii Murr., P. Evo'hartii (Ell. & Gall.) 



M 



M 



M 



M 



Mont.^ M 



Murr., P, Haematoxyli Murr,, P, Langloisii M 

 [m.) Murr., P. yiicatanensis Mum, P. senex (I 



[ 



09- 



8. NIGROFOMES Murr. Bull. Torrey Club 31: 425. 1904. 



Type : Nigrofovies melanoporits (Mont.) Murr. 



Hymenophore large, perennial, epixylous, sessile : context 

 woody, purple ; tubes cylindrical, stratose, thick-walled, black : 

 spores ovoid, smooth, hyaline. 



^.,. Species : N. melanoponis (Mont.) Murr. /. c. 



Subfamily 3. AGARICEAE 



Hymenium annual, very rarely perennial, coriaceous to woody, 

 variable in size; surface anoderm, hairy or glabrous, variously 

 marked: context white or brown, fibrous, woody or punky; 

 hymenium exceedingly variable, normally labyrinthiform or lamel- 

 loid, but often poroid or even irpiciform, never stratified : spores 

 smooth, brown or hyaline. 



Poroid and irpiciform plants of this group are difficult to separ- 

 ate from certain species of the Polyportae ; forms o^ Agaricus con- 

 fragosiis in particular being troublesome to the beginner. On 



