Rhizopogon idahoensis

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Noun1.Rhizopogon idahoensis - a large whitish Rhizopogon that becomes greyish brown in maturity
false truffle - any of various fungi of the family Rhizopogonaceae having subterranean fruiting bodies similar to the truffle
genus Rhizopogon, Rhizopogon - a genus of fungi having subterranean sporophores resembling tubers