Hypomyces chrysospermus

Hypomyces chrysospermus, the bolete eater, is a parasitic ascomycete fungus that grows on bolete mushrooms, turning the afflicted host a whitish, golden yellow, or tan color. It is found in Eurasia and North America, as well as southwest Western Australia.

Bolete eater and its afflicted host mushrooms are not edible and may be poisonous.