golden waxcap mushroom
A specific mushroom species, Hygrocybe chlorophana. The name is usually written in katakana as ツキミタケ.
The golden waxcap mushroom is a fungus found in grasslands in autumn.
Kanji spelling exists but is rarely used; no priority markers for this form is specified.
The name 月見茸 (moon-viewing mushroom) likely refers to its yellow color and autumnal appearance, but the exact derivation is uncertain.