This Creepy-Looking Fungus Known as "Dead Man's Fingers"

Stroma and perithecia
As seen on the left, inside the communal fruitbody known as a stroma (plural stromata) the flesh is white; it is quite hard. Near the surface are spore-producing cavities known as perithecia - visible in this picture as black dots against the white background. There is a tiny pore-like hole in the top of each perithecium, and when the asci explode and eject their spores this is their exit route to the great world outside.