Mutinus caninus
Encyclopedia
Mutinus caninus, commonly known as the dog stinkhorn, is a small thin, phallus-shaped woodland
Woodland
Ecologically, a woodland is a low-density forest forming open habitats with plenty of sunlight and limited shade. Woodlands may support an understory of shrubs and herbaceous plants including grasses. Woodland may form a transition to shrubland under drier conditions or during early stages of...

 fungus
Fungus
A fungus is a member of a large 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, Fungi, which is separate from plants, animals, and bacteria...

, with a dark tip. It is often found growing in small groups on wood debris, or in leaf litter, during summer and autumn in Europe, Asia, and eastern North America. It is not generally considered edible
Edible mushroom
Edible mushrooms are the fleshy and edible fruiting bodies of several species of fungi. Mushrooms belong to the macrofungi, because their fruiting structures are large enough to be seen with the naked eye. They can appear either below ground or above ground where they may be picked by hand...

, although there are reports of the immature 'eggs' being consumed.

Taxonomy

The genus name Mutinus was a phallic deity, Mutinus Mutunus
Priapus
In Greek mythology, Priapus or Priapos , was a minor rustic fertility god, protector of livestock, fruit plants, gardens and male genitalia. Priapus is marked by his absurdly oversized, permanent erection, which gave rise to the medical term priapism...

, one of the Roman di indigetes
Di indigetes
In Georg Wissowa's terminology the di indigetes or indigites were Roman deities and spirits not adopted from other mythologies, as distinguished from the di novensides...

placated by Roman brides, and caninus means "dog-like" in Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

. Mutinus is the diminutive
Diminutive
In language structure, a diminutive, or diminutive form , is a formation of a word used to convey a slight degree of the root meaning, smallness of the object or quality named, encapsulation, intimacy, or endearment...

 of muto, a latin word for Penis
Penis
The penis is a biological feature of male animals including both vertebrates and invertebrates...

. It was described initially by William Hudson
William Hudson (botanist)
William Hudson FRS was a British botanist and apothecary based in London. His main work was Flora Anglica, published in 1762. He was elected a fellow of the Royal Society in 1761.- Life and work :...

 (1730–1793), a noted British botanist. Its common names in French, Phallus de Chien, Satyre des chiens, also hint at its resemblance to a dog penis. It is commonly
Common name
A common name of a taxon or organism is a name in general use within a community; it is often contrasted with the scientific name for the same organism...

 known as the "dog stinkhorn".

Description

This small member of the Phallaceae family emerges from an off-white egg-like fruiting body that lies half buried in leaf litter on the woodland floor. White mycelial cord
Mycelial cord
Mycelial cords are linear aggregations of parallel-oriented hyphae. The mature cords are composed of wide, empty vessel hyphae surrounded by narrower sheathing hyphae...

s (rhizomorphs), are often visible beneath this 'egg', which is 2–4 cm (0.8–1.6 in) high, and 1–2 cm (0.4–0.8 in) wide. The 'egg' has a tough outer skin (peridium), which covers a gelatinous inner layer, which in turn protects the fully formed, but unexpanded fruiting body. When the ‘egg’ splits open the fungus expands rapidly (usually within a few hours), to its full height of 10–12 cm (4–5 in). It is around 1 cm (0.4 in) thick, and is either yellowish-white, yellow, or pale orange. The split egg is retained as a volva-like sack, at the base. The column is very fragile, pitted, and cylindrical. It has a pointed tip, and is usually curved. The tip is covered in the spore bearing matter (gleba) which is a dark olive-brown paste, and has a smell which is irresistible to insects. (These insects help distribute the spores on their bodies, and in their stomachs.) Beneath the spore mass the tip is dark orange. Although its smell is not as strong as the related common stinkhorn (Phallus impudicus
Phallus impudicus
Phallus impudicus, known colloquially as the common stinkhorn, is a widespread fungus 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 western North America, where it...

), it has been described as smelling like cat faeces.

American mycologist Sanford Myron Zeller
Sanford Myron Zeller
Sanford Myron Zeller was an American mycologist. Born in Coldwater, Michigan, Zeller was educated at Lawrence College in Wisconsin, then Greenville College in Illinois, from which he received a Bachelor of Science degree in 1909. He earned his doctorate in botany in 1917 at Washington University...

 described an albino form of the fungus based on collections made in Warrengon, Oregon. This form, named M. caninus var. albus, was first mentioned in the scientific literature by Edward Angus Burt in 1896. It is essentially identical to the regular form except that it is pure white throughout, except for the gleba.

Similar species

Mutinus ravenelii
Mutinus ravenelii
Mutinus ravenelii is a species of fungus that is often confused with M. elegans and M. caninus. M. ravenelii is a member of the Phallaceae family.-Edibility:...

is pinker in coloration, with a red tip. It is a rarer American species, now spreading in Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

. Another North American species Mutinus elegans
Mutinus elegans
Mutinus elegans, commonly known as the elegant stinkhorn, the dog stinkhorn, the headless stinkhorn, or the devil's dipstick, is a species of fungus in the Phallaceae family. A saprobic species, it is typically found growing on the ground singly or in small groups on woody debris or leaf litter,...

is very similar to M. ravenelii, and is short and stocky, with a more pointed apex.

Distribution and habitat

The dog stinkhorn is found occasionally, and is quite common in Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

, Britain
British Islands
British Islands is a term within the law of the United Kingdom which since 1889 has referred collectively to the following four states:*the United Kingdom of Great Britain and Northern Ireland ;...

, and Eastern North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

. The fungus is listed in the red data list
Regional Red List
A Regional Red List is a report of the threatened status of species within a certain country or region. It is based on the IUCN Red List of Threatened Species, an inventory of the conservation status of species on a global scale...

 of the Ukraine. A collection from the Canary Islands
Canary Islands
The Canary Islands , also known as the Canaries , is a Spanish archipelago located just off the northwest coast of mainland Africa, 100 km west of the border between Morocco and the Western Sahara. The Canaries are a Spanish autonomous community and an outermost region of the European Union...

 was noted as the southernmost collection for the species in the Northern Hemisphere. It is also been collected in Iran, Turkey, and China, including Hebei
Hebei
' is a province of the People's Republic of China in the North China region. Its one-character abbreviation is "" , named after Ji Province, a Han Dynasty province that included what is now southern Hebei...

, Jilin
Jilin
Jilin , is a province of the People's Republic of China located in the northeastern part of the country. Jilin borders North Korea and Russia to the east, Heilongjiang to the north, Liaoning to the south, and Inner Mongolia to the west...

, and Guangdong
Guangdong
Guangdong is a province on the South China Sea coast of the People's Republic of China. The province was previously often written with the alternative English name Kwangtung Province...

. It appears from summer to late autumn, and is usually found in small groups; in leaf litter; on wood debris, or wooded roadsides. It may occur in both deciduous
Deciduous
Deciduous means "falling off at maturity" or "tending to fall off", and is typically used in reference to trees or shrubs that lose their leaves seasonally, and to the shedding of other plant structures such as petals after flowering or fruit when ripe...

, and coniferous woods. The fruit bodies of the fungus can serve as a food source for developing blow flies (Phormia regina
Phormia regina
The species Phormia regina, more commonly known as the black blow fly, belongs to the blow fly family Calliphoridae. Although some authorities merge both the blow fly group and the flesh fly group together in the family Metopiidae, key distinguishable physical traits allow for this...

).

Edibility

The dog stinkhorn is probably edible
Edible mushroom
Edible mushrooms are the fleshy and edible fruiting bodies of several species of fungi. Mushrooms belong to the macrofungi, because their fruiting structures are large enough to be seen with the naked eye. They can appear either below ground or above ground where they may be picked by hand...

 at the ‘egg’ stage, but it is not recommended. At least one report from West Virginia
West Virginia
West Virginia is a state in the Appalachian and Southeastern regions of the United States, bordered by Virginia to the southeast, Kentucky to the southwest, Ohio to the northwest, Pennsylvania to the northeast and Maryland to the east...

in the eastern United States strongly recommends the 'eggs' peeled and fried as a tasty dish.
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