4 TROPICAL POLYPORES 



Surface of hymenophore not as above. 



Hymenophore distinctly stipitate. 45. AMAURODERMA. 



Hymenophore sessile or subsessile. 



Context white, flesh-colored, or wood-colored. 37. FOMES. 



Context olivaceous. 38. FOMITELLA. 



Context brown, latericeous, dark-purple, or black. 

 Surface not encrusted; or, if so, context woody. 

 Context brown or latericeous. 

 Hymenium porose. 



Spores hyaline. 39. PYROPOLYPORUS . 



Spores brown. 40. FULVIFOMES. 



Hymenium porose-daedaleoid. 41. PORODAEDALEA. 



Context dark-purple or black. 42. NIGROFOMES. 



Surface encrusted; context punky. 



Spores hyaline or subhyaline. 43. ELFVINGIELLA. 



Spores decidedly brown. 44. ELFVINGIA. 



Tribe 4. DAEDALEAE. 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 lamelloid, but often poroid or even irpici- 

 form, never stratified; spores smooth, brown or hyaline. Poroid and irpiciform 

 plants of this group are difficult to separate from certain species of Polyporeae, 

 forms of Daedalea confragosa in particular being troublesome to the beginner. 

 On the other hand, there is little to cause confusion between this group and 

 the Fomiteae, if we except the single distinctly perennial species of Daedalea 

 and the daedaleoid forms of Porodaedalea. 

 Context white or wood-colored. 



Hymenium labyrinthiform, often becoming lamellate or 



irpiciform. 



Hymenium very soon becoming irpiciform. 47. CERRENA. 



Hymenium rarely becoming irpiciform and then 



not until maturity. 48. DAEDALEA. 



Hymenium lamellate from the first, not becoming 



irpiciform. 49. LENZITES. 



Context brown. 50. GLOEOPHYLLUM. 



I. IRPICIPORUS Murrill 



Hymenophore annual, epixylous, sessile, effused-reflexed, 

 white or pallid throughout; surface anoderm, glabrous or velvety, 

 not distinctly zonate, margin acute ; context white, coriaceous or 

 corky; hymenium hydnoid or irpiciform, with traces of shallow, 

 obsolete tubes near the margin; spores smooth, hyaline. 



Surface villose; margin not cirrhose. 

 Surface glabrous; margin cirrhose. 



1. I. lacteus. 



2. I. cubensis. 



