Rhizomorpha Luminaris, from Latin roots meaning root form and light-bearing, is a bioluminescent fungus with slender, cream-colored stipes up to 10 cm tall, supporting broad, trumpet-shaped caps with vivid violet-pink centers and soft white edges. Its dense gills radiate spores, while translucent, veined stipes enable gentle swaying. Emitting blue bioluminescence (420-490 nm) via luciferin-luciferase on gill surfaces, it glows softly at dusk. Thriving on temperate forest floors (10-20°C) on decomposing litter, it serves a saprotrophic role. Taxonomically in Omphalotaceae, genus Rhizomorpha, order Agaricales, it disperses spores by wind and forms extensive white mycelium crucial for nutrient cycling. Classified vulnerable, it reflects temperate woodland biodiversity's delicate balance.