fungal genus containing single species commonly known giant giant common rocky_mountains pacific_coast ranges western north_america round diameter white brownish age covered shallow pyramid shaped plates scales fruits singly groups roads open woods high elevations summer autumn originally described new science published years later species named resemblance usually distinguished field prominent like branches thread like material spores good edible species interior flesh firm white matures dark brown mature spores taxonomy article american mycologist noted existence abundant widely distributed western united_states commonly differed species having extensively branched threads characteristics aligned taxa similar known base similar structure threads reminiscent new species unique combination characteristics fit described genera result new genus contain type collection california elevation publication genus invalid lacked description latin requirement international code botanical nomenclature implemented effective january genus species published latin description described variety var based collection northeastern washington variety known type locality differs nominate variety grayish outer minute scales based invalid genus invalid later published correctly authority var usually classified family status group unclear authorities contrast placed family erected contain genera united similarities morphology currently considered independent taxonomic significance folded genus combines parts referring genus ally genus similarity specific epithet refers resemblance species frequently confused common names refer fungus include giant giant description fruit bodies irregularly shaped roughly spherical measuring wide high layered outer layer thick base measuring thick divided irregular sided low usually blunt pointed thick parallel markings feature attributed differences growth rate caused variations daytime nighttime temperatures pyramid centers short brownish hairs cover entire near base smooth surface young fruit bodies thick inner thin shiny tissue depressed areas plates base occupies quarter fruit body consists moderately sized chambers persist matured spores dispersed base assume base rooted soil initially white turns color yellow golden brown dark brown spores mature inner cracks exposing spore mass cracks scales supported yellowish brown light brown spherical spores measure including outer covering surface texture ranges smooth oil translucent small stalk long basidia spore bearing cells club shaped spored measure long wide comprises short highly branched resembling threads measuring wide walls thick threads edible interior firm white flesh odor mild taste similar species field difficult reliably distinguish species prominent specimens especially young ones share feature distinction blurred microscopic differences tell species apart highly branched smooth reduced absent base tends split open maturity irregularly shaped sections threads found high elevations conifers western north_america smaller fruit bodies measuring high wide small pointed gray tips large diameter found open grassy areas western united_states flat scales outer addition larger size differs lacks sterile base branched habitat distribution saprobic species dead plant material fruit bodies grow singly groups occasionally clusters fruiting occurs april august areas broken rocks mixed soil open coniferous forest elevations ranging usual habitat road sides common mountain distribution covers rocky_mountains pacific_coast ranges western united_states eastern cascade range found growing pine collected california colorado idaho washington wyoming oregon range extends north british_columbia alaska found hunters spring grows similar habitats
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