Luminomyces Crystalloides, named for its light-emitting and crystal-like appearance, is a bioluminescent fungus in the Galactic Mycelium cluster. Its translucent, gelatinous caps measure up to 15 cm, with a violet hue and central orange luminescent spots. Thin, close-set gills radiate from stout, semi-translucent stipes emitting intense yellow-orange bioluminescence. Utilizing a luciferin-luciferase system, it produces blue light (450-495nm) likely to attract spore-dispersing invertebrates in dim tropical rainforest understories. Thriving on decaying woody substrates in moist, cool (10-20°C) environments, it functions as a key decomposer. Taxonomically placed in Mycomycetaceae (Agaricales, Luminomyces), it relies on bioluminescence-mediated animal vectors for spore dispersal. Its extensive mycelial network supports nutrient cycling and soil health. Listed as vulnerable due to habitat loss, it serves as an indicator of tropical forest ecosystem integrity.