Mushrooms of Armillaria hinnulea, a species of honey fungus (or "pidpenky", from Ukrainian). Honey fungi are parasitic fungi that live on trees and woody shrubs. As a forest pathogen, it can be very destructive because unlike most parasites, it does not need to moderate its growth in order to avoid killing its host, since it will continue to thrive on the dead material. Honey fungi are long lived and form some of the largest living organisms in the world, including one that covers more than 3.4 sq mi (8.8 km2) and is thousands of years old. The mushrooms are edible, but can be easily confused with poisonous Galerina species, which can grow side-by-side with Armillaria.Photo: Noodle snacks