pileus_surface_rugose
rugulose
varying effuso-reflexed with a resupinate part -20 cm in radius, or stunted and becoming subungulate, the applanate pilei slightly ascending, often imbricate, matt but soon glabrous, rather uneven and rugulose, closely shallowly and narrowly sulcate, becoming irregularly tuberculate at the base, sometimes proliferating knobbly abortive pilei from the base
Scindalma melanoporum
Nigrofomes melanoporus