Luminaria Mystica, from Latin 'lumen' (light) and 'mystica' (mysterious), is a bioluminescent fungus in the Aetherium Arborescens cluster, family Mycenaceae, genus Luminaria, order Agaricales. It features translucent, convex caps (5-25 cm) with violet warts and widely spaced radiating lamellae emitting blue (450-495 nm) bioluminescence from cap and gill tissues via a luciferin-luciferase reaction. The cylindrical, semi-translucent stipe has longitudinal striations and wart-like protrusions. Fruiting bodies cluster typically. Thriving in moist, cool (10-20°C) temperate forests on leaf litter and decaying wood, it decomposes lignin and cellulose, recycling nutrients. Luminescent gills attract nocturnal arthropods for spore dispersal, aided by wind. Its extensive mycelium supports ecosystem stability. Conservation is critical due to vulnerable status.