Foxfire, also called fairy fire and
chimpanzee
The chimpanzee (''Pan troglodytes''), also known as simply the chimp, is a species of great ape native to the forest and savannah of tropical Africa. It has four confirmed subspecies and a fifth proposed subspecies. When its close relative t ...
fire, is the
bioluminescence
Bioluminescence is the production and emission of light by living organisms. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some b ...
created by some species of
fungi
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately fr ...
present in decaying wood. The bluish-green glow is attributed to a
luciferase
Luciferase is a generic term for the class of oxidative enzymes that produce bioluminescence, and is usually distinguished from a photoprotein. The name was first used by Raphaël Dubois who invented the words '' luciferin'' and ''luciferase'' ...
, an oxidative enzyme, which emits light as it reacts with a
luciferin
Luciferin (from the Latin ''lucifer'', "light-bearer") is a generic term for the light-emitting compound found in organisms that generate bioluminescence. Luciferins typically undergo an enzyme-catalyzed reaction with molecular oxygen. The resul ...
. The phenomenon has been known since ancient times, with its source determined in 1823.
Description
Foxfire is the
bioluminescence
Bioluminescence is the production and emission of light by living organisms. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some b ...
created by some species of
fungi
A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately fr ...
present in decaying wood. It occurs in a number of species, including ''
Panellus stipticus
''Panellus stipticus'', commonly known as the bitter oyster, the astringent panus, the luminescent panellus, or the stiptic fungus, is a species of fungus in the family Mycenaceae, and the type species of the genus '' Panellus''. A common and ...
'', ''
Omphalotus olearius
''Omphalotus olearius'',Singer R (1948) In: ''Pap. Mich. Acad. Sci.'' 32: 133 ('1946'). commonly known as the jack-o'-lantern mushroom, is a poisonous orange gilled mushroom that to an untrained eye appears similar to some chanterelles. It is n ...
'' and ''
Omphalotus nidiformis''. The bluish-green glow is attributed to
luciferin
Luciferin (from the Latin ''lucifer'', "light-bearer") is a generic term for the light-emitting compound found in organisms that generate bioluminescence. Luciferins typically undergo an enzyme-catalyzed reaction with molecular oxygen. The resul ...
, which emits light after oxidation catalyzed by the enzyme
luciferase
Luciferase is a generic term for the class of oxidative enzymes that produce bioluminescence, and is usually distinguished from a photoprotein. The name was first used by Raphaël Dubois who invented the words '' luciferin'' and ''luciferase'' ...
. Some believe that the light attracts insects to spread spores, or acts as a warning to hungry animals, like the bright colors exhibited by some poisonous or unpalatable animal species.
Although generally very dim, in some cases foxfire is bright enough to read by.
History
The oldest recorded documentation of foxfire is from 382 B.C., by
Aristotle
Aristotle (; grc-gre, Ἀριστοτέλης ''Aristotélēs'', ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Peripatetic school of ...
, whose notes refer to a light that, unlike fire, was cold to the touch. The Roman thinker
Pliny the Elder
Gaius Plinius Secundus (AD 23/2479), called Pliny the Elder (), was a Roman author, naturalist and natural philosopher, and naval and army commander of the early Roman Empire, and a friend of the emperor Vespasian. He wrote the encyclopedic ' ...
also mentioned glowing wood in olive groves.
Foxfire was used to illuminate the needles on the barometer and the compass of ''
Turtle
Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked t ...
'', an early submarine. This is commonly thought to have been suggested by
Benjamin Franklin
Benjamin Franklin ( April 17, 1790) was an American polymath who was active as a writer, scientist, inventor, statesman, diplomat, printer, publisher, and political philosopher. Encyclopædia Britannica, Wood, 2021 Among the leading int ...
; a reading of the correspondence from
Benjamin Gale
Benjamin Gale (December 14, 1715May 6, 1790) was an American physician, scientist, agriculturist, inventor and political polemicist who was known for his political protests against the New Lights, which resulted in a fifteen year pamphlet war ...
, however, shows that Benjamin Franklin was only consulted for alternative forms of lighting when the cold temperatures rendered the foxfire inactive.
After many more literary references to foxfire by early scientists and naturalists, its cause was discovered in 1823. The glow emitted from wooden support beams in mines was examined, and it was found that the luminescence came from fungal growth.
The "fox" in ''foxfire'' may derive from the Old French word , meaning "false", rather than from the name of the animal.
[Smythe Palmer, Abram, ''The Folk and Their Word-lore: An Essay on Popular Etymologies'' (1904)] The association of foxes with such fires is widespread, however, and occurs also in
Japanese folklore
Japanese folklore encompasses the informally learned folk traditions of Japan and the Japanese people as expressed in its oral traditions, customs, and material culture.
In Japanese, the term is used to describe folklore. The academic study ...
.
See also
*
Aurora Borealis
An aurora (plural: auroras or aurorae), also commonly known as the polar lights, is a natural light display in Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic). Auroras display dynamic patterns of br ...
, called "revontulet" (literally "foxfires") in the
Finnish language
Finnish ( endonym: or ) is a Uralic language of the Finnic branch, spoken by the majority of the population in Finland and by ethnic Finns outside of Finland. Finnish is one of the two official languages of Finland (the other being Swedish ...
*
List of bioluminescent fungi
]
Found largely in temperate and tropical climates, currently there are more than 112 known species of bioluminescent fungi, all of which are members of the order Agaricales (Basidiomycota) with one exceptional ascomycete belonging to the order Xy ...
*
Will-o'-the-wisp
In folklore, a will-o'-the-wisp, will-o'-wisp or ''ignis fatuus'' (, plural ''ignes fatui''), is an atmospheric ghost light seen by travellers at night, especially over bogs, swamps or marshes. The phenomenon is known in English folk belief, ...
References
External links
{{Wiktionary
Foxfire: Bioluminescence in the ForestPDF file
by Dr. Kim D. Coder, University of Georgia 8/99
at Mykoweb
Bioluminescence
Bioluminescent fungi
Mycology