Luminamycetae Ignis, named from Latin lumen (light) and ignis (fire), is a bioluminescent fungus emitting a fiery glow. It features a convex to broadly umbonate cap with vivid reddish-orange hues and a strongly decurved margin revealing bright bioluminescent lamellae. The robust 10–30 cm stipe is cream to pale orange with a smooth, moist surface and occasional white mycelial cords at the base. Fruiting bodies cluster on arboreal substrates in tropical rainforest canopies, favoring humid, cool microclimates (5–20°C). Bioluminescence (470–530 nm) arises from a luciferin-luciferase system producing pulsating blue-green to yellowish light. Taxonomically in Mycenaceae, genus Luminamycetae, order Agaricales, it disperses basidiospores via wind and attracts nocturnal vectors. Its extensive mycelium decomposes wood and organic matter, supporting nutrient cycling and canopy biodiversity. L. Ignis is rare but stable, enriching tropical arboreal ecosystems.