Luminara Spectrabilis, a rare bioluminescent fungus of the Aetherium Arborescens cluster, features clustered fruiting bodies with convex to undulating caps up to 15 cm tall. The moist, semi-translucent caps display bright yellow to green bioluminescent zones (450–495 nm) at the margin and apex. White to pale cream lamellae are closely spaced, attached to pale, fibrous stems with luminescent speckles. It grows immobile on decomposing hardwood in tropical rainforest canopies, within 5–25°C. Bioluminescence, from a luciferin-luciferase system in cap epidermis and stipe, likely aids spore dispersal by attracting nocturnal arthropods. Classified within Basidiomycota, this genus (~20 species) plays a critical ecological role by enzymatically decomposing lignocellulosic material, supporting nutrient cycling. Spores disperse via wind and biotic vectors, integrating L. Spectrabilis into the tropical canopy biome.