mycophile
/ˈmʌɪkə(ʊ)fʌɪl/noun
An enthusiast for mushrooms and other (especially edible) fungi; a person fond of eating mushrooms. Also occasionally as adjective: = mycophilic.
Origin
Late 19th century; earliest use found in The Botanical Gazette. From myco- + -phile, after French mycophile.