Luminosae Kaleidoscopa, a bioluminescent fungus from tropical caves, features 10-30 cm tall violet-lavender caps with bright orange-yellow translucent spots revealing internal luminescence. Its densely spaced gills emit golden-orange light beneath slender, semi-translucent stipes anchored in thick mycelial mats. Bioluminescence (420-490 nm) arises from a luciferin-luciferase enzymatic system producing blue-green light, enhanced by tissue translucency and pigmentation. Thriving in cool (10-20°C), humid aquatic cave substrates, it decomposes organic detritus. Spore dispersal involves forcible ejection and aquatic undulation aiding air currents. Belonging to Mycenaceae, genus Luminosae, order Agaricales, this rare species forms extensive rhizomorphic networks vital for cave nutrient cycling and ecology.