Phosphorodiscus Radians, a rare bioluminescent fungus in the Iridomycetaceae family (genus Phosphorodiscus, order Agaricales), features delicate, layered caps with scalloped margins in creamy white to pale pink. Its smooth caps have subtle ridges, and the translucent yellow stipe (0–15 cm) is slender and fibrous. Thriving in tropical rainforest canopies on decaying hardwood, this saprotroph contributes to nutrient cycling by decomposing lignocellulosic material. Bioluminescence (420–490 nm) from luciferin-luciferase activity in gills and stipe emits a soft blue-green glow, attracting nocturnal insects for spore dispersal. The species extends fruiting bodies via growth movement into canopy gaps, with an expansive mycelium permeating decayed wood.