species fungal genus occurs pacific_northwest region united_states western oregon northern california known locally oregon brown thought species molecular analysis demonstrated distinct genus reddish brown rough outer skin interior spore producing initially whitish developing brown matures mature odor resembling cheese similar mature species harvested purposes oregon taxonomy species described scientifically based specimens collected february oregon known locally years oregon brown assumed species based overall resemblance similar habitat oregon black given provisional molecular analysis dna sequences revealed species related genera family including close affinity soil surface genera including genetic morphological characters sufficiently distinct warrant designation distinct genus genera produce huge spores sizes ranging spore bearing cells thick cell walls young thin mature trait shared authors explain genera share trait large spore size striking differences spore structure morphological difference microscopic characters ruled placing family convincing molecular evidence proving generic refers people native american ethnic group traditional encompassed range fungus people known eaten regard mushrooms taboo food specific epithet latin brown color mature description like fruit bodies roughly spherical furrows dimensions typically outer skin thick ranges color light yellowish brown orange brown reddish brown usually darker patches maturity surface texture rough covered flat rounded wide larger smaller older specimens develop narrow cracks surface branching basal attachment roughly similar texture breaks readily extracted soil internal spore bearing tissue initially whitish firm develops grayish brown matures edible harvested purposes frequency pacific_northwest flavor odor edible fruit body resemble mature cheese source described taste follows served melted butter reminded spores ellipsoid shape smooth surface contain large central oil drop surrounded smaller spore dimensions walls measuring thick melzer reagent spores stain readily blue contain spores shaped dimensions stem base initially thick walls thin roughly mature comprises loosely interwoven thin walled hyaline hyphae measuring diameter similar species oregon black roughly similar appearance habitat growing season distinguished darker black spores larger single large oil edible prized taste habitat distribution species known pacific_northwest region united_states grows douglas fir forests years old authors suggest tree usually appearing october march fruit bodies grow soil beneath soil litter elevations ranging roughly sea level occurs west oregon coastal ranges oregon northern california
Kalapuya brunnea