Luminosa Iridescens, from Latin for “shining with rainbow colors,” is a bioluminescent fungus in the Mycenaceae family (genus Luminosa, order Agaricales). It features translucent, tubular fruiting bodies up to 15 cm tall with flared caps and smooth gills emitting vivid blue-green light (420-490 nm), alongside glowing orange mycelial pockets in the stem and cap. The slender stipe supports swaying that aids spore dispersal. Its bioluminescence, driven by a unique luciferin-luciferase system in vacuoles of cap and stem tissues, emits sustained light through oxidation. Native to tropical forest floors (10-20°C), it thrives saprotrophically on decayed wood and leaf litter, forming dense mycelial mats that enhance decomposition and soil formation. Spore dispersal combines passive wind spread and nocturnal insect attraction, promoting genetic exchange. Though locally rare, it forms dense clusters under optimal conditions, playing a vital ecological role.