species fungus family fungus consisting fertile spore bearing surface lying flat underside decaying wood fan shaped overlapping caps formed common eastern united_states recognized distinct species owing resemblance closely related differences ecology spore size dna sequences distinguish taxonomy described new species journal publication resulted research conducted work ecology taxonomy phd conducted supervision material collected philadelphia species description based collections noted presence species similarity common european species publication degree dna sequences internal regions confirm species genetically distinct specific epithet refers resemblance latin derives meaning having form molecular analysis shows closely related species description perennial fruit bodies vertical surface partially lying flat substrate hymenium covering upper surface partially upper small caps elongated growing surface length tough texture individual caps reach dimensions roughly horizontal upper surfaces brownish narrow white margin underside cap surface initially white turns dirty brown matures individual pores round small numbering millimeter tubes color surface deep flesh white thick fruit bodies infested species causes surface system meaning predominantly types hyphae comprise fruit body hyphae relatively hyphae develop reproductive structures thin walled clamp connections wide skeletal hyphae thick walled long hyaline translucent straight width cystidia absent cells hymenium size basidia remaining sterile basidia club shaped spored clamp connection bases measure thin walled spores ellipsoid somewhat tapered ends hyaline non melzer reagent measure cultures compatibility tests grown plates identical chemical similar appearance authors note authors combinations north american collections compatibility tests confirmed presence different mating indicating north american collections represented single species similar performed north american european collections showed species incompatible distinct similar species similar appearance larger spores distinguished field substrate preferences usually fruits coniferous wood grows strictly old oak habitat distribution fungus grows lying oak logs pennsylvania maryland virginia north_carolina tennessee owing similarity likely confused past true limits distribution unclear authors suggests probably occurs southeastern states consider common species eastern usa found grayish strictly species
Antrodia serialiformis