Luminus Azureus, named for its light and blue hues, is a bioluminescent fungus with translucent, delicate fruiting bodies 10-25 cm tall. It features an intricate cap with ruffled edges and prominent radial lamellae emitting an azure glow via a luciferin-luciferase system active in thin cellular layers, producing 420-490 nm blue light visible in dark caves. Found in deep caves at 10-20°C, it grows on decomposing organic matter, aiding nutrient recycling. Classified in the Noctiluca Grove cluster, family Mycenaceae, order Agaricales, it disperses spores through lamellae into cave air, supporting genetic diversity. Its mycelium decomposes wood, playing a vital saprotrophic role. With ten known species, L. Azureus is vulnerable and requires habitat conservation.