noun
sulphur tuft; clustered woodlover
A poisonous mushroom species, Hypholoma fasciculare, commonly found on decaying wood. The name literally means 'bitter chestnut mushroom'.
ニガクリタケは毒キノコなので、絶対に食べないでください。
The sulphur tuft is a poisonous mushroom, so please never eat it.
森でニガクリタケを見つけた。
I found a sulphur tuft in the forest.
The name is a compound of 苦 (にが, 'bitter'), 栗 (くり, 'chestnut'), and 茸 (たけ, 'mushroom'), referring to its bitter taste and chestnut-like appearance.