Coprinus comatus

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Coprinus comatus
Coprinus comatus, the shaggy ink cap, lawyer's wig, or shaggy mane mushroom.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Agaricaceae
Genus: Coprinus
Species:
C. comatus
Binomial name
Coprinus comatus
(O.F.Müll.) Pers. (1797)
Synonyms [2]
  • Agaricus cylindricus Schaeff. (1774)
  • Agaricus comatusO.F.Müll. (1780)
  • Agaricus vaillantii J.F.Gmel. (1792)
Coprinus comatus
Information icon.svg
Gills icon.png Gills on hymenium
Conical cap icon.svg Cap is conical
Free gills icon2.svg Hymenium is free
Ring stipe icon.svg Stipe has a ring
Transparent spore print icon.svg
Spore print is black
Saprotrophic fungus.svgEcology is saprotrophic
Mycomorphbox Choice.pngEdibility is choice

Coprinus comatus, commonly known as the shaggy ink cap, lawyer's wig, or shaggy mane, is a common fungus often seen growing on lawns, along gravel roads and waste areas. The young fruit bodies first appear as white cylinders emerging from the ground, then the bell-shaped caps open out. The caps are white, and covered with scales—this is the origin of the common names of the fungus. The gills beneath the cap are white, then pink, then turn black and deliquesce ('melt') into a black liquid filled with spores (hence the "ink cap" name). [3] This mushroom is unusual because it will turn black and dissolve itself in a matter of hours after being picked or depositing spores.

When young it is an excellent edible mushroom provided that it is eaten soon after being collected (it keeps very badly because of the autodigestion of its gills and cap). If long-term storage is desired, microwaving, sauteing or simmering until limp will allow the mushrooms to be stored in a refrigerator for several days or frozen. Also, placing the mushrooms in a glass of ice water will delay the decomposition for a day or two so that one has time to incorporate them into a meal. Processing or icing must be done whether for eating or storage within four to six hours of harvest to prevent undesirable changes to the mushroom. The species is cultivated in China as food.

Taxonomy

The shaggy ink cap was first described by Danish naturalist Otto Friedrich Müller in 1780 as Agaricus comatus, before being given its current binomial name in 1797 by Christiaan Hendrik Persoon. Its specific name derives from coma, or "hair", hence comatus, "hairy" or "shaggy". [4] Other common names include lawyer's wig, [4] and shaggy mane.

Coprinus comatus is the type species for the genus Coprinus . This genus was formerly considered to be a large one with well over 100 species. However, molecular analysis of DNA sequences showed that the former species belonged in two families, the Agaricaceae and the Psathyrellaceae. [5] Coprinus comatus is the best known of the true Coprinus.

Description

The shaggy ink cap is easily recognizable from its almost cylindrical cap which initially covers most of its stem. The cap ranges from 4–8 cm (1+583+18 in) in width and 6–20 cm (2+387+78 in) in height. [6] It is mostly white with shaggy scales, which are more pale brown at the apex. The free gills change rapidly from white to pink, then to black. [6] It is deliquescent. The white and fairly thick stipe [7] measures 6–40 cm (2–16 in) high by 1–2.5 cm (12–1 in) in diameter and has a loose ring near the bottom. [6] [7] Microscopically, the mushroom lacks pleurocystidia. The spore print is black-brown and the spores measure 10–13 by 6.5–8  μm. The flesh is white and the taste mild. [8]

Similar species

The mushroom can sometimes be confused with the magpie fungus which is poisonous. In America, the 'vomiter' mushroom Chlorophyllum molybdites is responsible for most cases of mushroom poisoning due to its similarity with shaggy mane and other edible mushrooms. [9] Coprinopsis atramentaria (the common Ink Cap) is similar, and contains coprine and can induce coprine poisoning, particularly when consumed with alcohol. [6] Podaxis pistillaris is also similar. [6]

Distribution, habitat and ecology

It grows in groups in places which are often unexpected, such as green areas in towns. It occurs widely in grasslands and meadows in Europe and North America, from June through to November in the UK. It appears to have been introduced to Australia, New Zealand and Iceland. In Australia the species is sufficiently common to have been featured on a postage stamp issued by Australia Post in 1981. [10]

Coprinus comatus is a nematophagous fungus capable of killing and digesting the nematode species Panagrellus redivivus and Meloidogyne arenaria . [11] [12]

Edibility

The young mushrooms, before the gills start to turn black, are a choice edible mushroom, [13] but should be prepared soon after being collected as the black areas quickly turn bitter. [14] The taste is mild; cooking produces a large quantity of liquid. It can sometimes be used in mushroom soup with parasol mushroom. Large quantities of microwaved-then-frozen shaggy manes can be used as the liquid component of risotto, replacing the usual chicken stock.

Coprinus comatus is not to be confused with Coprinopsis atramentaria , which can induce coprine poisoning, particularly when consumed with alcohol. [6] Symptoms of coprine poisoning include vomiting, diarrhoea, palpitations and a metallic taste in the mouth. [15]

Related Research Articles

<span class="mw-page-title-main">Edible mushroom</span> Edible fungi fruit bodies

Edible mushrooms are the fleshy fruit bodies of several species of macrofungi. Edibility may be defined by criteria including the absence of poisonous effects on humans and desirable taste and aroma. Mushrooms that have a particularly desirable taste are described as "choice". Edible mushrooms are consumed for their nutritional and culinary value. Mushrooms, especially dried shiitake, are sources of umami flavor.

<i>Coprinus</i> Genus of fungi

Coprinus is a small genus of mushroom-forming fungi consisting of Coprinus comatus—the shaggy ink cap (British) or shaggy mane (American)—and several of its close relatives. Until 2001, Coprinus was a large genus consisting of all agaric species in which the lamellae autodigested to release their spores. The black ink-like liquid this creates gave these species their common name "ink cap" (British) or "inky cap" (American).

<span class="mw-page-title-main">Psathyrellaceae</span> Family of fungi

The Psathyrellaceae are a family of dark-spored agarics that generally have rather soft, fragile fruiting bodies, and are characterized by black, dark brown, rarely reddish, or even pastel-colored spore prints. About 50% of species produce fruiting bodies that dissolve into ink-like ooze when the spores are mature via autodigestion. Prior to phylogenetic research based upon DNA comparisons, most of the species that autodigested were classified as Coprinaceae, which contained all of the inky-cap mushrooms. However, the type species of Coprinus, Coprinus comatus, and a few other species, were found to be more closely related to Agaricaceae. The former genus Coprinus was split between two families, and the name "Coprinaceae" became a synonym of Agaricaceae in its 21st-century phylogenetic redefinition. Note that in the 19th and early 20th centuries the family name Agaricaceae had far broader application, while in the late 20th century it had a narrower application. The family name Psathyrellaceae is based on the former Coprinaceae subfamily name Psathyrelloideae. The type genus Psathyrella consists of species that produce fruiting bodies which do not liquify via autodigestion. Psathyrella remained a polyphyletic genus until it was split into several genera including 3 new ones in 2015. Lacrymaria is another genus that does not autodigest its fruiting bodies. It is characterized by rough basidiospores and lamellar edges that exude beads of clear liquid when in prime condition, hence the Latin reference, lacryma (tears).

<i>Macrolepiota procera</i> Species of fungus

Macrolepiota procera, the parasol mushroom, is a basidiomycete fungus with a large, prominent fruiting body resembling a parasol. It is a fairly common species on well-drained soils. It is found solitary or in groups and fairy rings in pastures and occasionally in woodland. It is widespread in temperate regions of Eurasia and possibly North America. Further research is needed to confirm whether specimens found in North America are the same species.

<i>Coprinopsis</i> Genus of fungi

Coprinopsis is a genus of mushrooms in the family Psathyrellaceae. Coprinopsis was split out of the genus Coprinus based on molecular data. The species Coprinopsis cinerea is a model organism for mushroom-forming basidiomycota, and its genome has recently been sequenced completely.

<i>Coprinopsis atramentaria</i> Species of fungus

Coprinopsis atramentaria, commonly known as the common ink cap, tippler's bane, or inky cap, is an edible mushroom found in Europe and North America. Previously known as Coprinus atramentarius, it is the second best known ink cap and previous member of the genus Coprinus after C. comatus. It is a widespread and common fungus found throughout the northern hemisphere. Clumps of mushrooms arise after rain from spring to autumn, commonly in urban and disturbed habitats such as vacant lots and lawns, as well as grassy areas. The grey-brown cap is initially bell-shaped before opening, after which it flattens and disintegrates. The flesh is thin and the taste mild. It can be eaten, but due to the presence of coprine within the mushroom, it is poisonous when consumed with alcohol, as it heightens the body's sensitivity to ethanol in a similar manner to the anti-alcoholism drug disulfiram.

<i>Chlorophyllum molybdites</i> Species of fungus

Chlorophyllum molybdites, commonly known as the green-spored parasol, false parasol, green-spored lepiota and vomiter, is a widespread mushroom. Poisonous and producing severe gastrointestinal symptoms of vomiting and diarrhea, it is commonly confused with the shaggy parasol or shaggy mane, and is the most commonly misidentified poisonous mushroom in North America. Its large size and similarity to the edible parasol mushroom, as well as its habit of growing in areas near human habitation, are reasons cited for this. The nature of the poisoning is predominantly gastrointestinal.

<span class="mw-page-title-main">Inkcap</span> Index of fungi with the same common name

Inkcap may refer to any of a number of toadstools of the genera Coprinus, Coprinellus and Coprinopsis.

<i>Podaxis pistillaris</i> Species of fungus

Podaxis pistillaris is a very distinctive relative of the puffballs. It is commonly known as the desert shaggy mane, as it bears a superficial resemblance to the shaggy mane, Coprinus comatus; this species lacks the latter's deliquescing gills, however, and the two are not closely related. It grows to 15 cm high and has a hard, woody stem. The large cap, which protects the blackish spore-bearing tissue, splits, and usually falls away at maturity, allowing the spores to be dispersed by wind. Large numbers may appear after soaking rains. It thrives in deserts and semi-deserts of Australia and other countries, often found on termite mounds in South Africa. In the Hawaiian Islands, it is frequently encountered along roadsides and in disturbed areas on the dry sides of the islands, especially in the Kona area of Hawaii and the Kihei area of Maui.

<i>Coprinopsis lagopus</i> Species of fungus

Coprinopsis lagopus is a species of fungus in the family Psathyrellaceae. Until 2001, the species was known as Coprinus lagopus; advances in the understanding of phylogenetic relationships between the various coprinoid species led to a major reorganization of that genus. It is a delicate and short-lived fungus, the fruit bodies lasting only a few hours before dissolving into a black ink – a process called deliquescence. The vague resemblance of the young fruit body to the paw of a white rabbit has earned this species the common name harefoot mushroom.

<i>Coprinellus micaceus</i> Species of edible fungus in the family Psathyrellaceae with a cosmopolitan distribution

Coprinellus micaceus, commonly known as the mica cap, glistening inky cap, or shiny cap, is a common species of mushroom-forming fungus in the family Psathyrellaceae with a cosmopolitan distribution. The fruit bodies of the saprobe typically grow in clusters on or near rotting hardwood tree stumps or underground tree roots. Depending on their stage of development, the tawny-brown mushroom caps may range in shape from oval to bell-shaped to convex, and reach diameters up to 3 cm. The caps, marked with fine radial or linear grooves that extend nearly to the center, rest atop whitish stipes up to 10 cm (4 in) long. In young specimens, the entire cap surface is coated with a fine layer of reflective mica-like cells. Although small and with thin flesh, the mushrooms are usually bountiful, as they typically grow in dense clusters. A few hours after collection, the gills will begin to slowly dissolve into a black, inky, spore-laden liquid—an enzymatic process called autodigestion or deliquescence. The fruit bodies are edible before the gills blacken and dissolve, and cooking will stop the autodigestion process.

<i>Tulosesus impatiens</i> Species of fungus

Tulosesus impatiens is a species of fungus in the family Psathyrellaceae. First described in 1821, it has been classified variously in the genera Psathyrella, Pseudocoprinus, Coprinarius, and Coprinus, before molecular phylogenetics reaffirmed it as a Coprinellus species in 2001. The fungus is found in North America and Europe, where the mushrooms grow on the ground in deciduous forests. The fruit bodies have buff caps that are up to 4 cm (1.6 in) in diameter, held by slender whitish stems that can be up to 10 cm (3.9 in) tall. Several other Coprinopsis species that resemble C. impatiens may be distinguished by differences in appearance, habit, or spore morphology.

<i>Coprinopsis variegata</i> Species of fungus

Coprinopsis variegata, commonly known as the scaly ink cap or the feltscale inky cap, is a species of fungus in the family Psathyrellaceae. Distributed in eastern North America, it has a medium-sized, bell-shaped to flattened cap up to 7.5 cm (3.0 in) in diameter, with felt-like, patchy scales. The gills, initially white, turn black in maturity and eventually dissolve into a black "ink". Fruit bodies grow in clusters or groups on leaf litter or rotted hardwood, although the wood may be buried, giving the appearance of growing in the soil. The fungus is found in the United States, in areas east of the Great Plains. Coprinus ebulbosus and Coprinus quadrifidus are names assigned by Charles Horton Peck to what he believed were species distinct from C. variegata; they were later shown to represent the same species, and are now synonyms. The mushroom is not recommended for consumption, and has been shown to cause allergic reactions in susceptible individuals.

<i>Coprinopsis picacea</i> Species of fungus

Coprinopsis picacea, commonly known as the magpie mushroom, magpie fungus, or magpie inkcap fungus, is a species of fungus in the family Psathyrellaceae. It was first described in 1785 by French mycologist Jean Baptiste François Pierre Bulliard in 1785 as Agaricus picaceus.

<i>Pholiota squarrosa</i> Species of fungus

Pholiota squarrosa, commonly known as the shaggy scalycap, the shaggy Pholiota, or the scaly Pholiota, is a species of mushroom in the family Strophariaceae. Common in North America and Europe, it is a secondary parasite, in that it attacks trees that have already been weakened from prior injury or infection by bacteria or other fungi. It has a wide range of hosts among deciduous trees, although it can also infect conifers. It can also live as a saprobe, deriving nutrients from decomposing wood.

<i>Parasola auricoma</i> Species of fungus

Parasola auricoma is a species of agaric fungus in the family Psathyrellaceae. First described scientifically in 1886, the species is found in Europe, Japan, and North America. The mushroom was reported in February 2019 in Colombia, in the city of Bogota by the mycologist Juan Camilo Rodriguez Martinez. The small, umbrella-shaped fruit bodies (mushrooms) of the fungus grow in grass or woodchips and are short-lived, usually collapsing with age in a few hours. The caps are up to 6 cm (2.4 in) wide, initially elliptical before flattening out, and colored reddish-brown to greyish, depending on their age and hydration. They are pleated with radial grooves extending from the center to the edge of the cap. The slender, whitish stems are up to 12 cm (4.7 in) long and a few millimeters thick. Microscopically, P. auricoma is characterized by the presence of setae in its cap cuticle. This characteristic, in addition to the relatively large, ellipsoid spores can be used to distinguish it from other morphologically similar Parasola species.

<i>Coprinopsis radiata</i> Species of fungus

Coprinopsis radiata, formerly known as Coprinus radiatus, and commonly known as the miniature woolly inky cap, is a coprophilous fungus that grows on herbivore dung. It is heterothallic.

<i>Coprinus sterquilinus</i> Species of fungus

Coprinus sterquilinus, the midden ink cap, is a species of fungus in the family Agaricaceae. It grows on animal dung and occurs in Europe, Asia and America.

Coprinopsis martinii is a species of mushroom producing fungus in the family Psathyrellaceae.

<i>Coprinopsis nivea</i> Species of fungus

Coprinopsis nivea is a species of mushroom producing fungus in the family Psathyrellaceae. It is commonly known as the snowy inkcap.

References

Much of the above article was translated from the French page and Dutch pages.

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  15. Collins, How to Identify Edible Mushrooms by Harding, Lyon & Tomblin

Further reading