Phallus Impudicus
   HOME

TheInfoList



OR:

''Phallus impudicus'', known colloquially as the common stinkhorn, is a widespread
fungus A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...
in the
Phallaceae Phallaceae is a family of fungi, commonly known as stinkhorns, within the order Phallales. Stinkhorns have a worldwide distribution, but are especially prevalent in tropical regions. They are known for their foul-smelling, sticky spore masses ...
(stinkhorn) family. It is recognizable for its foul odor and its phallic shape when mature, the latter feature giving rise to several names in 17th-century England. It is a common mushroom in Europe and North America, where it occurs in habitats rich in wood debris such as forests and mulched gardens. It appears from summer to late autumn. The fruiting structure is tall and white with a slimy, dark olive colored conical head. Known as the gleba, this material contains the
spore In biology, a spore is a unit of sexual reproduction, sexual (in fungi) or asexual reproduction that may be adapted for biological dispersal, dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores fo ...
s, and is transported by insects which are attracted by the odor—described as resembling
carrion Carrion (), also known as a carcass, is the decaying flesh of dead animals. Overview Carrion is an important food source for large carnivores and omnivores in most ecosystems. Examples of carrion-eaters (or scavengers) include crows, vultures ...
. Despite its foul smell, it is not usually poisonous and immature mushrooms are consumed cooked on their own or feature as an ingredient in cuisines of parts of the
Czech Republic The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the south ...
,
France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
and
Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
.


Taxonomy

The Italian naturalist Ulisse Aldrovandi described the fungus in 1560 with name ''fungus priapeus'', and he depicted it in his series of water-coloured plates called ''teatro della natura'' ('nature's theater' 1560–1590). Another botanist,
John Gerard John Gerard (also John Gerarde, 1545–1612) was an English herbalist with a large garden in Holborn, now part of London. His 1,484-page illustrated ''Herball, or Generall Historie of Plantes'', first published in 1597, became a popular garde ...
called it the "pricke
mushroom A mushroom or toadstool is the fleshy, spore-bearing Sporocarp (fungi), fruiting body of a fungus, typically produced above ground on soil or another food source. ''Toadstool'' generally refers to a poisonous mushroom. The standard for the n ...
" or "fungus virilis penis effigie" in his ''General Historie of Plants'' of 1597, and John Parkinson referred to it as "Hollanders workingtoole" or "phallus hollandicus" in his ''Theatrum botanicum'' of 1640.
Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...
described it in his 1753 ''
Species Plantarum ' (Latin for "The Species of Plants") is a book by Carl Linnaeus, originally published in 1753, which lists every species of plant known at the time, classified into genus, genera. It is the first work to consistently apply binomial nomenclature ...
'', and it still bears its original binomial name. Its
specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...
, ''impudicus'', is derived from the
Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
for "shameless" or "immodest".


Description

Sometimes called the ''witch's egg'', the immature stinkhorn is whitish or pinkish, egg-shaped, and typically by .On the outside is a thick whitish volva, also known as the peridium, covering the olive-colored gelatinous gleba. It is the latter that contains the spores and later stinks and attracts the flies; within this layer is a green layer which will become the 'head' of the expanded fruit body; and inside this is a white structure called the receptaculum (the stalk when expanded), that is hard, but has an airy structure like a sponge. The eggs become fully grown stinkhorns very rapidly, over a day or two. The mature stinkhorn is tall and in diameter, topped with a conical cap high that is covered with the greenish-brown slimy gleba. In older fungi the slime is eventually removed, exposing a bare yellowish pitted and ridged (''reticulate'') surface. This has a passing resemblance to the common morel ('' Morchella esculenta''), for which it is sometimes mistaken. The rate of growth of ''Phallus impudicus'' has been measured at per hour. The growing fruit body is able to exert up to 1.33 
kPa The pascal (symbol: Pa) is the unit of pressure in the International System of Units (SI). It is also used to quantify internal pressure, stress, Young's modulus, and ultimate tensile strength. The unit, named after Blaise Pascal, is an SI ...
of
pressure Pressure (symbol: ''p'' or ''P'') is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled ''gage'' pressure)The preferred spelling varies by country and eve ...
— a force sufficient to push up through
asphalt Asphalt most often refers to: * Bitumen, also known as "liquid asphalt cement" or simply "asphalt", a viscous form of petroleum mainly used as a binder in asphalt concrete * Asphalt concrete, a mixture of bitumen with coarse and fine aggregates, u ...
. The
spore In biology, a spore is a unit of sexual reproduction, sexual (in fungi) or asexual reproduction that may be adapted for biological dispersal, dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores fo ...
s have an elliptical to oblong shape, with dimensions of 3–5 to 1.5–2.5  μm.


Similar species

In North America, ''Phallus impudicus'' can be distinguished from the very similar '' P. hadriani'' by the latter's purplish-tinted volva.


Spore dispersal

The dispersal of spores is different from most "typical" mushrooms that spread their
spore In biology, a spore is a unit of sexual reproduction, sexual (in fungi) or asexual reproduction that may be adapted for biological dispersal, dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores fo ...
s through the air. Stinkhorns instead produce a sticky spore mass on their tip which has a sharp, sickly-sweet odor of
carrion Carrion (), also known as a carcass, is the decaying flesh of dead animals. Overview Carrion is an important food source for large carnivores and omnivores in most ecosystems. Examples of carrion-eaters (or scavengers) include crows, vultures ...
to attract
flies Flies are insects of the Order (biology), order Diptera, the name being derived from the Ancient Greek, Greek δι- ''di-'' "two", and πτερόν ''pteron'' "wing". Insects of this order use only a single pair of wings to fly, the hindwin ...
and other insects. Odorous chemicals in the gleba include
methanethiol Methanethiol (also known as methyl mercaptan) is an organosulfur compound with the chemical formula . It is a colorless gas with a distinctive putrid smell. In small amounts, it is pervasive in nature and found in certain foods, such as some n ...
,
hydrogen sulfide Hydrogen sulfide is a chemical compound with the formula . It is a colorless chalcogen-hydride gas, and is toxic, corrosive, and flammable. Trace amounts in ambient atmosphere have a characteristic foul odor of rotten eggs. Swedish chemist ...
,
linalool Linalool () refers to two enantiomers of a naturally occurring terpene alcohol found in many flowers and spice plants. Together with geraniol, nerol, and citronellol, linalool is one of the rose alcohols. Linalool has multiple commercial app ...
, ''trans''- ocimene, phenylacetaldehyde,
dimethyl sulfide Dimethyl sulfide (DMS) or methylthiomethane is an organosulfur compound with the formula . It is the simplest thioether and has a characteristic disagreeable odor. It is a flammable liquid that boils at . It is a component of the smell produc ...
, and dimethyl trisulfide. The latter compound has been found to be emitted from fungating cancerous wounds. The mature fruiting bodies can be smelled from a considerable distance in the woods, and at close quarters most people find the cloying stink extremely repulsive. The flies land in the gleba and in doing so collect the spore mass on their legs and carry it to other locations. An Austrian study demonstrated that blow-flies (species '' Calliphora vicina'', '' Lucilia caesar'', ''Lucilia ampullacea'' and '' Dryomyza anilis'') also feed on the slime, and soon after leaving the fruit body, they deposit liquid feces that contain a dense suspension of spores. The study also showed that beetles (''Oeceoptoma thoracica'' and ''Meligethes viridescens'') are attracted to the fungus, but seem to have less of a role in spore dispersal as they tend to feed on the hyphal tissue of the fruiting body. Stinkmorchel.mit.Fliegen.P1094309.jpg, Cap covered by insects Stinkmorchel.ohne.Fliegen.P1094311.jpg, Same specimen not covered by insects There is also a possible ecological association between the ''P. impudicus'' and
badger Badgers are medium-sized short-legged omnivores in the superfamily Musteloidea. Badgers are a polyphyletic rather than a natural taxonomic grouping, being united by their squat bodies and adaptions for fossorial activity rather than by the ...
(''Meles meles'') setts. Fruiting bodies are commonly clustered in a zone from the entrances; the setts typically harbor a regularly-available supply of badger cadavers – the mortality rate of cubs is high, and death is more likely to occur within the sett. The fruiting of large numbers of stinkhorns attracts a high population of blow-flies (''Calliphora'' and ''Lucilla'' breed on carrion); this ensures the rapid elimination of badger carcasses, removing a potential source of disease to the badger colony. The laxative effect of the gleba reduces the distance from the fruiting body to where the spores are deposited, ensuring the continued production of high densities of stinkhorns.


Distribution and habitat

The common stinkhorn can be found throughout much of
Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...
and
North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...
, and it has also been collected in Asia (including
China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...
, Taiwan, and
India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...
),
Costa Rica Costa Rica, officially the Republic of Costa Rica, is a country in Central America. It borders Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, and the Pacific Ocean to the southwest, as well as Maritime bo ...
,
Iceland Iceland is a Nordic countries, Nordic island country between the Atlantic Ocean, North Atlantic and Arctic Oceans, on the Mid-Atlantic Ridge between North America and Europe. It is culturally and politically linked with Europe and is the regi ...
,
Tanzania Tanzania, officially the United Republic of Tanzania, is a country in East Africa within the African Great Lakes region. It is bordered by Uganda to the northwest; Kenya to the northeast; the Indian Ocean to the east; Mozambique and Malawi to t ...
, and southeast
Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...
. In North America, it is most common west of the
Mississippi River The Mississippi River is the main stem, primary river of the largest drainage basin in the United States. It is the second-longest river in the United States, behind only the Missouri River, Missouri. From its traditional source of Lake Ita ...
; Ravenel's stinkhorn ('' Phallus ravenelii'') is more common to the east. The fungus is associated with rotting wood, and as such it is most commonly encountered in
deciduous In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed Leaf, leaves, usually in the autumn; to the shedding of petals, aft ...
woods where it fruits from summer to late autumn, though it may also be found in
conifer Conifers () are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a sin ...
woods or even grassy areas such as parks and gardens. It may also form mycorrhizal associations with certain trees.


Uses


Edibility

At the egg stage, pieces of the inner layer (the ''receptaculum'') can be cut out with a knife and eaten raw. They are crisp and crunchy with an attractive radishy taste. The fungus is enjoyed and eaten in
France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
and parts of
Germany Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
, where it may be sold fresh or pickled and used in
sausage A sausage is a type of meat product usually made from ground meat—often pork, beef, or poultry—along with salt, spices and other flavourings. Other ingredients, such as grains or breadcrumbs, may be included as fillers or extenders. ...
s. Similar species are consumed in China.


Medicinal properties

Venous thrombosis, the formation of a blood clot in a vein, is a common cause of death in breast cancer patients; patients with recurrent disease are typically maintained on
anticoagulant An anticoagulant, commonly known as a blood thinner, is a chemical substance that prevents or reduces the coagulation of blood, prolonging the clotting time. Some occur naturally in blood-eating animals, such as leeches and mosquitoes, which ...
s for their lifetimes. A research study has suggested that extracts from ''P. impudicus'' can reduce the risk of this condition by reducing the incidence of
platelet Platelets or thrombocytes () are a part of blood whose function (along with the coagulation#Coagulation factors, coagulation factors) is to react to bleeding from blood vessel injury by clumping to form a thrombus, blood clot. Platelets have no ...
aggregation, and may have potential as a supportive preventive nutrition. It was used in medieval times as a cure for
gout Gout ( ) is a form of inflammatory arthritis characterized by recurrent attacks of pain in a red, tender, hot, and Joint effusion, swollen joint, caused by the deposition of needle-like crystals of uric acid known as monosodium urate crysta ...
and as a love potion.


Folk uses

In Northern
Montenegro , image_flag = Flag of Montenegro.svg , image_coat = Coat of arms of Montenegro.svg , coa_size = 80 , national_motto = , national_anthem = () , image_map = Europe-Mont ...
, peasants rub ''Phallus impudicus'' on the necks of bulls before bull fighting contests in an attempt to make them stronger. They are also fed to young bulls as they are thought to be a potent
aphrodisiac An aphrodisiac is a substance that increases libido, sexual desire, sexual attraction, sexual pleasure, or sexual behavior. These substances range from a variety of plants, spices, and foods to synthetic chemicals. Natural aphrodisiacs, such as ...
. In 1777, the reverend John Lightfoot wrote that the people of
Thuringia Thuringia (; officially the Free State of Thuringia, ) is one of Germany, Germany's 16 States of Germany, states. With 2.1 million people, it is 12th-largest by population, and with 16,171 square kilometers, it is 11th-largest in area. Er ...
called the unopened stinkhorns "ghost's or daemon's eggs" and dried and powdered them before mixing them in spirits as an aphrodisiac.


In culture

Writing about life in Victorian Cambridge, Gwen Raverat (granddaughter of
Charles Darwin Charles Robert Darwin ( ; 12 February 1809 – 19 April 1882) was an English Natural history#Before 1900, naturalist, geologist, and biologist, widely known for his contributions to evolutionary biology. His proposition that all speci ...
) describes the 'sport' of stinkhorn hunting:
In our native woods there grows a kind of toadstool, called in the vernacular ''The Stinkhorn'', though in Latin it bears a grosser name. The name is justified, for the fungus can be hunted by the scent alone; and this was Aunt Etty's great invention. Armed with a basket and a pointed stick, and wearing special hunting cloak and gloves, she would sniff her way round the wood, pausing here and there, her nostrils twitching, when she caught a whiff of her prey; then at last, with a deadly pounce, she would fall upon her victim, and poke his putrid carcass into her basket. At the end of the day's sport, the catch was brought back and burnt in the deepest secrecy on the drawing-room fire, with the door locked; ''because of the morals of the maids''.
In Thomas Mann's novel '' The Magic Mountain'' (''Der Zauberberg''), the psychologist Dr. Krokowski gives a lecture on the ''Phallus impudicus'':
And Dr. Krokowski had spoken about one fungus, famous since classical antiquity for its form and the powers ascribed to it – a morel, its Latin name ending in the adjective ''impudicus'', its form reminiscent of love, and its odor, of death. For the stench given off by the ''impudicus'' was strikingly like that of a decaying corpse, the odor coming from greenish, viscous slime that carried its spores and dripped from the bell-shaped cap. And even today, among the uneducated, this morel was thought to be an aphrodisiac.Thomas Mann (1995). ''The Magic Mountain'', translated by John E. Woods. New York: Alfred A. Knopf. pp. 358–359. .
In Danilo Kiš's novel Garden, Ashes the protagonist's father Eduard Schaum provokes the suspicions of the local residents and authorities through his mad wandering and sermonizing in the forests:
The story went round, and was preached from the pulpit, that his iron-tipped cane possessed magical powers, that trees withered like grass whenever he walked in the Count's forest, that his spit produced poisonous mushrooms --''Ithyphalus impudicus''--that grew under the guise of edible, cultivated varieties.


References


External links

* {{good article Edible fungi Phallales Fungi of North America Fungi of Europe Fungi of Asia Fungi of Australia Fungi of Central America Fungi described in 1753 Taxa named by Carl Linnaeus Fungi of Iceland Fungus species