Cystoderma carcharias

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Cystoderma carcharias
Cystoderma carcharias 27630.jpg
Scientific classification
Kingdom:
Division:
Class:
Order:
Family:
Genus:
Species:
C. carcharias
Binomial name
Cystoderma carcharias
Synonyms

Agaricus carcharias
Agaricus granulosus var. carcharias
Lepiota carcharias [1]

Contents

Cystoderma carcharias
Information icon.svg
Gills icon.png Gills on hymenium
Convex cap icon.svgFlat cap icon.svg Cap is convex or flat
Adnate gills icon2.svgor adnate
Ring stipe icon.svg Stipe has a ring
Transparent spore print icon.svg
Spore print is white
Saprotrophic fungus.svgEcology is saprotrophic
Mycomorphbox Inedible.pngEdibility is inedible

Cystoderma carcharias, is a species of agaric in the fungal family Agaricaceae. It has a widespread distribution, and has been collected in coniferous forests and grasslands in Asia, Europe, North America, and the subantarctic islands. In the field, fruit bodies are characterized by a pink cap up to 6 cm (2.4 in) broad, a well-developed ring on the stem, and an unpleasant odour.

Taxonomy

The species was first described scientifically by Christian Hendrik Persoon, who named it Agaricus carcharias in 1794. [2] Swiss mycologist Victor Fayod assigned it its current name in 1889. [3] The specific epithet carcharias is probably derived from the Greek καρχαρός (karcharos) which means sharp, pointed or jagged. καρχαρίας (karcharias) is translated as shark.

Description

The fruiting body of Cystoderma carcharias is a relatively small agaric. The fruiting body is characterised by an off-white and pale pink-tinged cap with a distinct darker central spot, and a powdery cuticle. The cap is at first convex, but with maturity becomes flat and slightly umbonate. The cap is up to 6 cm (2.4 in) in diameter and may bear a margin fringed with remnants of a partial veil. The gills are white, adnate and crowded. The stem is white and smooth above, and granular below a white, upturned, flared and persistent ring. The stem is cylindrical and up to 7 cm (2.8 in) tall. The flesh is white, firm and full throughout. [4] [5] Additionally, C. carcharias forma album is a form recognised as having a snow-white cap. [6]

Under a microscope, the spores are ellipsoid, with dimensions 4–5.5 by 3–4  µm. The spores are white and amyloid. The basidia are 4-spored, [4] [5] [7] club-shaped, and measure 20–25 by 4–6 µm. [8]

The fruiting body of C. carcharias bears a characteristic strong, unpleasant odour. The odour has been described as earthy, muddy and mouldy by various authors. This has been attributed to the presence of the compound geosmin. [9] The taste is not distinctive.

Cystoderma carcharias is a fairly common fungus distributed in Europe, North America and temperate Asia, [8] typically occurring in coniferous forests. [10] It has also been found on the treeless, Australian subantarctic Macquarie Island. [11] Fruit bodies are found singly or in groups on soil among grass or moss during late summer and autumn. The fungus is an acidophilic litter saprotroph growing frequently under conifers, namely spruce.

Cystoderma carcharias accumulates cadmium in its fruiting bodies. In polluted areas, cadmium concentrations may even exceed 600 mg/kg in dry mass. [12] Intracellular Cd accumulated in sporocarps of C. carcharias is associated with two isoforms of metallothioneins. [13] Furthermore, C. carcharias contains numerous organoarsenic compounds from which dimethylarsinoylacetate and trimethylarsoniopropionate have been reported for the first time in the terrestrial environment. [12]

This fungus has been deemed inedible by various authors. [4] [14]

Related Research Articles

<i>Russula</i> Genus of fungi

Russula is a very large genus composed of around 750 worldwide species of ectomycorrhizal mushrooms. They are typically common, fairly large, and brightly colored – making them one of the most recognizable genera among mycologists and mushroom collectors. Their distinguishing characteristics include usually brightly coloured caps, a white to dark yellow spore print, brittle, attached gills, an absence of latex, and absence of partial veil or volva tissue on the stem. Microscopically, the genus is characterised by the amyloid ornamented spores and flesh (trama) composed of spherocysts. Members of the related genus Lactarius have similar characteristics but emit a milky latex when their gills are broken. The genus was described by Christian Hendrik Persoon in 1796.

<i>Entoloma sinuatum</i> Species of poisonous fungus in the family Entolomataceae found across Europe and North America

Entoloma sinuatum is a poisonous mushroom found across Europe and North America. Some guidebooks refer to it by its older scientific names of Entoloma lividum or Rhodophyllus sinuatus. The largest mushroom of the genus of pink-spored fungi known as Entoloma, it is also the type species. Appearing in late summer and autumn, fruit bodies are found in deciduous woodlands on clay or chalky soils, or nearby parklands, sometimes in the form of fairy rings. Solid in shape, they resemble members of the genus Tricholoma. The ivory to light grey-brown cap is up to 20 cm (7.9 in) across with a margin that is rolled inward. The sinuate gills are pale and often yellowish, becoming pink as the spores develop. The thick whitish stem has no ring.

<i>Paxillus involutus</i> Species of fungus

Paxillus involutus, also known as the brown roll-rim or the common roll-rim, is a basidiomycete fungus that is widely distributed across the Northern Hemisphere. It has been inadvertently introduced to Australia, New Zealand, South Africa, and South America, probably transported in soil with European trees. Various shades of brown in colour, the fruit body grows up to 6 cm high and has a funnel-shaped cap up to 12 cm wide with a distinctive inrolled rim and decurrent gills that may be pore-like close to the stipe. Although it has gills, it is more closely related to the pored boletes than to typical gilled mushrooms. It was first described by Pierre Bulliard in 1785, and was given its current binomial name by Elias Magnus Fries in 1838. Genetic testing suggests that Paxillus involutus may be a species complex rather than a single species.

<i>Agaricus augustus</i> Species of fungus

Agaricus augustus, known commonly as the prince, is a basidiomycete fungus of the genus Agaricus.

<i>Hebeloma radicosum</i> Species of fungus

Hebeloma radicosum, commonly known as the rooting poison pie, is a species of agaric fungus in the family Hymenogastraceae. Fruit bodies (mushrooms) can be identified by the tapering root-like stipe base, as well as the almond-like odor.

<i>Mycena haematopus</i> Fungus species in the family Mycenaceae widespread and common in Europe and North America

Mycena haematopus, commonly known as the bleeding fairy helmet, the burgundydrop bonnet, or the bleeding Mycena, is a species of fungus in the family Mycenaceae, of the order Agaricales. It is widespread and common in Europe and North America, and has also been collected in Japan and Venezuela. It is saprotrophic—meaning that it obtains nutrients by consuming decomposing organic matter—and the fruit bodies appear in small groups or clusters on the decaying logs, trunks, and stumps of deciduous trees, particularly beech. The fungus, first described scientifically in 1799, is classified in the section Lactipedes of the genus Mycena, along with other species that produce a milky or colored latex.

<i>Cystoderma</i> Genus of fungi

Cystoderma is a genus of fungi in the family Agaricaceae or Cystodermataceae. Its family position is in doubt and the family "Cystodermataceae" and tribe "Cystodermateae" have been proposed to include this group following recent molecular work.

<i>Cystodermella</i> Genus of fungi

Cystodermella is a genus of fungi in the family Agaricaceae. The genus comprises about 12 species, noted for producing agaric fruit bodies, bearing a cap, white gills and stipe with a fine, ephemeral ring. The genus was devised by Harri Harmaja in 2002, dividing the older genus Cystoderma into three independent genera: Cystoderma, Ripartitella and Cystodermella largely on the basis of microscopic differences. Cystodermella species bear non-amyloid spores and sometimes cystidia. The spores, in contrast to Ripartitella are not echinulate.

<i>Phaeolepiota</i> Family of fungi

Phaeolepiota is a genus of fungi in the family Squamanitaceae. The genus is monotypic, containing the single species Phaeolepiota aurea. Commonly known as golden bootleg or golden cap, P. aurea is an agaric found throughout North America and Eurasia – often in groups and next to nettles. Molecular research, based on cladistic analysis of DNA sequences, shows that Phaeolepiota is close to and may be congeneric with Cystoderma.

<i>Dendrocollybia</i> Genus of fungi in the family Tricholomataceae

Dendrocollybia is a fungal genus in the family Tricholomataceae of the order Agaricales. It is a monotypic genus, containing the single species Dendrocollybia racemosa, commonly known as the branched collybia or the branched shanklet. The somewhat rare species is found in the Northern Hemisphere, including the Pacific Northwest region of western North America, and Europe, where it is included in several Regional Red Lists. It usually grows on the decaying fruit bodies of other agarics—such as Lactarius and Russula—although the host mushrooms may be decayed to the point of being difficult to recognize.

<i>Thelephora</i> Genus of fungi

Thelephora is a genus of fungi in the family Thelephoraceae. The genus has a widespread distribution and contains about 50 species. Fruit bodies of species are leathery, usually brownish at maturity, and range in shape from coral-like tufts to having distinct caps. Almost all species in the genus are thought to be inedible, but Thelephora ganbajun is a gourmet fungus in Yunnan province of southwest China.

<i>Cystodermella cinnabarina</i> Species of fungus

Cystodermella cinnabarina is a basidiomycete fungus of the genus Cystodermella. Its fruiting body is a small agaric bearing a distinctive reddish-coloured grainy cap. It occurs in coniferous and deciduous forests throughout the world. Prior to 2002, this species belonged to genus Cystoderma, subsection Cinnabarina, under the name Cystoderma cinnabarinum which is still sometimes applied. Another often used synonym is Cystoderma terreyi.

<i>Marasmius rotula</i> Species of fungus

Marasmius rotula is a common species of agaric fungus in the family Marasmiaceae. Widespread in the Northern Hemisphere, it is commonly known variously as the pinwheel mushroom, the pinwheel marasmius, the little wheel, the collared parachute, or the horse hair fungus. The type species of the genus Marasmius, M. rotula was first described scientifically in 1772 by mycologist Giovanni Antonio Scopoli and assigned its current name in 1838 by Elias Fries.

<i>Cystolepiota bucknallii</i> Species of fungus

Cystolepiota bucknallii is a species of basidiomycete fungus of the genus Cystolepiota. Found throughout Europe, it is a rare fungus occurring in deciduous forests. The small fruit bodies bear a distinctive smell of coal gas and appear in autumn on damp ground. It is not an edible mushroom.

<i>Serpula</i> (fungus) Genus of fungi

Serpula is a genus of fungi in the family Serpulaceae.

<i>Thelephora palmata</i> Species of clavarioid fungus

Thelephora palmata is a species of clavarioid fungus in the family Thelephoraceae. The fruit bodies are leathery and coral-like, with branches that are narrow at the base before widening out like a fan and splitting into numerous flattened prongs. The wedge-like tips are whitish when young, but darken as the fungus matures. The common names of the fungus refers to its pungent odor, likened to fetid garlic. A widely distributed but uncommon species, it is found in Asia, Australia, Europe, North America, and South America, where it fruits on the ground in both coniferous and mixed forest.

<i>Strobilurus tenacellus</i> Species of fungus

Strobilurus tenacellus, commonly known as the pinecone cap, is a species of agaric fungus in the family Physalacriaceae. It is found in Asia and Europe, where it grows on the fallen cones of pine and spruce trees. The fruit bodies (mushrooms) are small, with convex to flat, reddish to brownish caps up to 15 mm (0.6 in) in diameter, set atop thin cylindrical stems up to 4–7.5 cm (1.6–3.0 in) long with a rooting base. A characteristic microscopic feature of the mushroom is the sharp, thin-walled cystidia found on the stipe, gills, and cap. The mushrooms, sometimes described as edible, are too small to be of culinary interest. The fungus releases compounds called strobilurins that suppress the growth and development of other fungi. Derivatives of these compounds are used as an important class of agricultural fungicides.

<i>Stropharia caerulea</i> Species of fungus

Stropharia caerulea, commonly known as the blue roundhead, is a species of mushroom forming fungus in the family Strophariaceae. It is a somewhat common species found in Europe and North America, where it grows as a saprophyte in meadows, roadsides, hedgerows, gardens, and woodchip mulch. S. caerulea was officially described to science in 1979, although it was known to be a distinct species for about two centuries before that. The scientific name Stropharia cyanea, as defined by Tuomikoski in 1953, and used by several later authors, is a synonym of S. caerulea.

<i>Marasmius tageticolor</i> Species of fungus

Marasmius tageticolor is a species of agaric fungus in the family Marasmiaceae. Its fruit bodies have striped red and white caps. It is found in Mexico, Central America, and South America, where it grows on twigs.

References

  1. "Cystoderma carcharias taxon record details at Index Fungorum". CAB International. Archived from the original on June 10, 2011. Retrieved January 11, 2010.
  2. Persoon CH. (1794). "Dispositio methodica fungorum". Neues Magazin für die Botanik, Römer (in Latin). 1: 81–128.
  3. Fayod MV. (1889). "Prodrome d'une histoire naturelle des Agaricinés". Annales des Sciences Naturelles, Botanique. VII (in French). 9: 351.
  4. 1 2 3 Jordan M. (1995). The Encyclopedia of Fungi of Britain and Europe. London: David & Charles. p. 214. ISBN   0-7153-0129-2.
  5. 1 2 Gerault, Alain (October 2005). "Florule Evolutive des Basidiomycotina du Finistere – Heterobasidiomycetes – Tricholomatales (in French)" (PDF). 2.1.{{cite journal}}: Cite journal requires |journal= (help)
  6. "Trial field key to the species of Cystoderma in the Pacific Northwest". Pacific Northwest Key Council. Retrieved January 30, 2010.
  7. Saar I, Põldmaa K, Kõljalg U (2009). "The phylogeny and taxonomy of genera Cystoderma and Cystodermella (Agaricales) based on nuclear ITS and LSU sequences". Mycological Progress. 8: 59–73. doi:10.1007/s11557-008-0578-9. S2CID   31184798.
  8. 1 2 Saar I. (2003). "The genera Cystoderma and Cystodermella (Tricholomataceae) in temperate Eurasia". Mycotaxon. 86: 455–73. Retrieved 2010-01-29.
  9. Tkacz J. S.; Lange L. (2004). Advances in fungal biotechnology for industry, agriculture, and medicine. Springer. p. 342. ISBN   0-306-47866-8.
  10. Dennis RWG. (1980). "Micro fungi of St. Kilda". Kew Bulletin. 34 (3): 742–44. doi:10.2307/4119067. JSTOR   4119067.
  11. "Interactive Catalogue of Australian Fungi: Cystoderma carcharias". Royal Botanic Gardens, Melbourne. Archived from the original on March 30, 2012. Retrieved February 7, 2012.
  12. 1 2 Borovička J., Braeuer S., Sácký J., Kameník J., Goessler W., Trubač J., Strnad L., Rohovec J., Leonhardt T., Kotrba P. (2019). "Speciation analysis of elements accumulated in Cystoderma carcharias from clean and smelter-polluted sites". Science of the Total Environment. 648: 1570–1581. Bibcode:2019ScTEn.648.1570B. doi:10.1016/j.scitotenv.2018.08.202. PMID   30340302. S2CID   53009222.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  13. Sácký J., Černý J., Šantrůček J., Borovička J., Leonhardt T., Kotrba P. (2021). "Cadmium hyperaccumulating mushroom Cystoderma carcharias has two metallothionein isoforms usable for cadmium and copper storage". Fungal Genetics and Biology. 153: 103574. doi:10.1016/j.fgb.2021.103574. PMID   34015433. S2CID   235075332.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  14. Polèse J.; Deconchat C. (2002). Champignons. L'encyclopédie. Losange: Editions Artemis. p. 245. ISBN   2-84416-145-6.