With The Arrival Of Japans Rainy Season, A Mysterious Type Of Green, Glow-in-the-dark Mushroom Begins To Sprout In Wakayama Prefecture. The Mycena Lux-coeli Mushrooms, Known Locally As Shii No Tomobishi-dake (literally, Chinquapin Glow Mushrooms), Sprout From Fallen Chinquapin Trees. As They Grow, A Chemical Reaction Involving Luciferin (a Light-emitting Pigment Contained Within The Mushrooms) Occurs, Causing Them To Glow A Ghostly Green.
