Wild mushroom for eumycophyta fungal fruiting body of Armillaria mellea. Mainly distributed in the mountainous areas of Heilongjiang province. Known as the "(dried)delicacies from the mountains", "the northeast's first treasures". Wild mushroom tender and refreshing, delicious taste and rich nutrition, by some developed countries as a kind of food. Wild mushroom umbrella, pale yellow, old brown. Were 7~8 months grow in coniferous and broad leaf stem base, root, wood and buried in the soil in the branches. The general students in shallow mountain Zhen Chai Gang, hence the name "wild mushroom".