Mutant Cave Fungus

The  is a consumable item in the Fallout: New Vegas add-on Old World Blues.

Characteristics
Unlike normal Cave fungus, Mutant Cave fungus adds radiation when consumed whereas a normal Cave Fungus would reduce radiation, and has an appropriate green glow. This item is needed to create Nightstalker squeezin's and Battle Brew.

Locations
This is a list of fixed non-random places where you can find.
 * Mysterious Cave (Around 20)
 * Big MT North Tunnel (Sonic Emitter EM required)
 * Ulysses' Point