honey fungus; honey mushroom
Refers specifically to Armillaria mellea, a parasitic mushroom that grows on trees. Used in both culinary and mycological contexts.
Honey mushrooms often grow at the base of broadleaf trees in autumn.
This honey mushroom is edible, but eating it raw can cause poisoning.
The name likely derives from 楢 (なら, 'oak') and 茸 (たけ, 'mushroom'), as it often grows on oak trees. The exact historical derivation is uncertain.