species mushroom family originally described molecular studies placed genus described cap mushroom diameter gray cracked margin sticky fresh gills start white soon turn pink stipe white base features dna sequence data great importance separating taxon related species fungus originally described growing reported michigan usa dominican_republic taxonomy species originally described american mycologist based collections october original description mention base stipe morphological characters separating smith mention large spores unusual genus species disappeared literature 20th century smith include species revised type collections north american morphological revision type dna sequence data based internal sequences obtained collection confirmed taxon belongs genus separate species members genus epithet refers state michigan fungus originally described original specimens species preserved description characters cap diameter conical young expands convex flat low broad center old specimens surface markedly fresh covered arranged cap ash gray similar color gills crowded free stipe broad white young turning pink age stipe long wide club shaped base surface white smooth sac like white smooth surface context white stipe cap change bruised exposed air smell recorded taste recorded spore print color recorded assumed pinkish brown microscopic characters ellipsoid shape basidia spore bearing cells spored pleurocystidia cystidia gill faces shaped shaped like leather bottle shaped cheilocystidia cystidia gill edge commonly cover completely gill edge cap cuticle parallel hyphae embedded gelatinous matrix parallel hyphae embedded gelatinous matrix cystidia stipe surface present cylindrical ecology distribution mushroom type collection collected collections dominican_republic collected piles vegetable matter species known type locality second locality dominican_republic dominican collection matches type collection molecular comparison performed similar species molecular analyses internal region clearly separate species currently recognized identification difficult overlapping morphological variation species size fruit bodies color cap spore size presence absence cystidia morphology cystidia important characters morphological species genus distinguished species relatively shorter spores measuring average long
Volvopluteus michiganensis