Overview
Flor de Coco (Neonothopanus gardneri), affectionately named the ‘coconut flower’ by local Brazilian villagers, is recognized by mycologists as one of the brightest bioluminescent mushrooms known to biological science. Originally discovered in 1840 by English botanist George Gardner when he observed local children playing in the dark with glowing fungi in Vila de Natividade, the species was lost to science for over 160 years before being rediscovered in 2009. Glowing with an eerie, radiant neon-green luminescence in nocturnal tropical forests, it has revolutionized biochemical understanding of fungal light emission.
Biology and Physical Characteristics
During daylight hours, Neonothopanus gardneri appears as a handsome, cream-to-pale-yellowish mushroom with a wavy, depressed fan-shaped cap and pale decurrent gills running down a sturdy lateral stem. However, in darkness, the entire fruiting body—particularly the hymenium gills—glows with a persistent, intense green light emitting at a peak wavelength of 530 nanometers. This emission is powered by an enzymatic oxidation reaction catalyzed by a fungal luciferase enzyme acting upon a luciferin molecule derived from caffeic acid.
Behavior and Ecology
Neonothopanus gardneri grows saprotrophically on the decaying fibrous leaf bases and fallen fronds of dwarf babassu palms (Attalea speciosa). Unlike mechanical phosphorescence, its bioluminescence is regulated by a circadian clock, peaking in intensity during the night when darkness is absolute. Evolutionary research confirms that this continuous green glow serves as a nocturnal beacon to attract rove beetles, termites, and wasps in the wind-sheltered forest understory, hitching spores onto insect exoskeletons for efficient fungal dispersal.
Conservation and Human Impact
While locally abundant during peak seasonal rains in intact palm groves, Neonothopanus gardneri is vulnerable to pervasive deforestation across the Brazilian Cerrado. Massive agricultural expansion for monoculture soy and cattle ranching destroys ancient palm groves and alters soil microclimates essential for mycelial survival. Establishing regional biodiversity corridors in Tocantins and Goiás remains vital to preserving the habitat of this extraordinary bioluminescent fungus.
Interesting Factoid
The green glow of Neonothopanus gardneri is so vivid that researchers and local villagers can easily read a book in pitch darkness simply by placing two or three mature mushrooms side-by-side.
Last updated: October 2026