noun
moonlight mushroom
A poisonous mushroom (Omphalotus guepiniformis) that glows faintly in the dark; often mistaken for edible species.
ツキヨタケは暗いところでほのかに光る毒キノコです。
The moonlight mushroom is a poisonous mushroom that glows faintly in the dark.
The name 月夜茸 (moon-night mushroom) comes from its faint bioluminescence, which is reminiscent of moonlight.