Glorium Spectrus, named from Latin glorium (brightness) and spectrus (spectrum), is a bioluminescent fungus in the Arboreal Aurantica cluster, family Mycenaceae, genus Glorium, order Agaricales. It has translucent, fan-shaped caps with wavy, pleated margins and decurrent lamellae displaying amber-orange and white translucency. The short, fused stipe anchors it to tropical rainforest hardwood. Bioluminescence arises from a luciferin-luciferase system emitting 420-490 nm blue-green light along hyphal ridges and cap edges, likely attracting spores in low-light conditions. Thriving at 15-25°C, it decomposes lignin and cellulose as a saprotroph. Spores are forcibly ejected from gills and dispersed by humid air currents. With an average height under 15 cm and mass 5-25 g, it plays a vital ecosystem role but is Near Threatened.