Dissoderma

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Dissoderma
Dissoderma odoratum 146007.jpg
Dissoderma odoratum, Finland
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Squamanitaceae
Genus: Dissoderma
(A.H. Sm. & Singer) Singer (1973)
Type species
Dissoderma paradoxum
(A.H. Sm. & Singer) Singer (1973)
Species
Synonyms
  • CooliaHuijsman (1943) nom. inval.
  • Cystoderma subg. DissodermaA.H. Sm. & Singer (1948)

Dissoderma is a genus of parasitic fungi in the family Squamanitaceae. Basidiocarps (fruit bodies) superficially resemble normal agarics (gilled mushrooms) but emerge from parasitized fruit bodies of deformed host agarics.

Contents

Taxonomy

Dissoderma was created in 1948 as a subgenus of Cystoderma and raised to generic rank in 1973. Though French mycologist Marcel Bon recognized and expanded the genus in 1999, [1] most other mycologists considered Dissoderma synonymous with Squamanita . [2] Molecular research, based on cladistic analysis of DNA sequences, has however confirmed Dissoderma as a genus distinct from Squamanita. A number of species previously referred to Squamanita have accordingly been transferred to Dissoderma. [2]

Description

Dissoderma species can be distinguished from Squamanita species by their violet-grey pilei (caps) and upper stipes (stems). The lower parts of the stipes are host tissue and as such are often distinct and differently coloured. Known hosts include species of Cystoderma , Galerina , and Hebeloma . [2]


See also


Related Research Articles

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<span class="mw-page-title-main">Arthur Anselm Pearson</span> English mycologist (1874–1954)

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<i>Cuphophyllus pratensis</i> Species of fungus

Cuphophyllus pratensis is a species of agaric in the family Hygrophoraceae. It has been given the recommended English name of meadow waxcap in the UK and in North America has variously been called the meadow waxy cap, salmon waxy cap, and butter meadowcap. The species has a widespread, mainly temperate distribution, occurring in grassland in Europe and in woodland elsewhere. The basidiocarps are edible and are occasionally collected and sold commercially.

<i>Hygrocybe quieta</i> Species of fungus

Hygrocybe quieta is a species of agaric in the family Hygrophoraceae. It has been given the recommended English name of oily waxcap in the UK. The species has a European distribution and typically occurs in grassland where it produces basidiocarps in the autumn. In several countries, H. quieta is of conservation concern, appearing on national red lists of threatened fungi.

<i>Pluteus phaeocyanopus</i> Species of fungus

Pluteus phaeocyanopus is an agaric fungus in the family Pluteaceae. Described as a new species in 2010, it has only been collected from California, where it grows singularly or in groups on the decaying wood of oak. The fruit body has a smooth brown cap measuring 2–4 cm (0.8–1.6 in) in diameter. The stipe is 2–5 cm (0.8–2.0 in) long by 0.4–0.8 cm (0.16–0.31 in) thick, and roughly equal in width throughout. It is whitish but becomes grayish-green near the base. The thin and fragile gills are free from attachment to the stipe, close to somewhat distantly placed, and interspersed with several tiers of lamellulae. The flesh has no distinctive taste or odor. The spores are spherical or nearly so and measure 6.2–8.4 by 5.7–7.9 μm.

<i>Lepiota cristata</i> Species of fungus

Lepiota cristata, commonly known as the stinking dapperling or the stinking parasol, is an agaric and possibly poisonous mushroom in the family Agaricaceae. A common and widespread species—one of the most widespread fungi in the genus Lepiota—it has been reported from Europe, northern Asia, North America, and New Zealand. It fruits on the ground in disturbed areas, such as lawns, path and road edges, parks, and gardens. The species produces fruit bodies characterized by the flat, reddish-brown concentric scales on the caps, and an unpleasant odour resembling burnt rubber. Similar Lepiota species can sometimes be distinguished from L. cristata by differences in cap colour, stipe structure, or odour, although some species can only be reliably distinguished through the use of microscopy.

<i>Imperator torosus</i> Species of fungus

Imperator torosus, commonly known as the brawny bolete, is a species of bolete fungus in the family Boletaceae. It is native to southern Europe east to the Caucasus and Israel. It is generally associated with deciduous trees such as hornbeam, oak and beech in warm, dry locales. Although generally rare in Europe, it appears to be relatively common in Hungary. Appearing in summer and autumn on chalky soils, the stocky fruit bodies have an ochre cap up to 20 cm (8 in) across, yellow pores on the cap underside, and a wine-red to brown or blackish stipe up to 6–15 cm (2.4–5.9 in) long by 3–6 cm (1.2–2.4 in) wide. The pale yellow flesh changes to different colours when broken or bruised depending on age; younger mushrooms become reddish, and older ones additionally take on bluish tones.

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Gymnopus moseri is a European species of agaric fungus in the family Omphalotaceae. It was described as new to science in 1997 by mycologists Vladimír Antonín and Machiel Noordeloos from collections made in Sweden. Fruit bodies of the holotype collection were found growing among Polytrichum and in coarse humus and leaves under birch (Betula) and willow (Salix). Collybia moseri is a synonym proposed by Marcel Bon in 1998. The specific epithet moseri honours Austrian mycologist Meinhard Michael Moser.

Squamanita contortipes is a small mushroom species in the family Squamanitaceae, formerly in the Tricholomataceae. It was originally described in 1957 by American mycologist Alexander H. Smith and Daniel Elliot Stuntz as a member of Cystoderma. Paul Heinemann and David Thoen transferred it to the genus Squamanita in 1973. Discovery of an unusual fruiting of this species where three fruitbodies grew on one, still fertile host pileus which was a species of Galerina proved that Squamanita was a mycoparasitic genus. Photos of this fruiting were published in 1994 and immediately republished and highlighted in 1995 in Nature magazine where the original discovery article was featured. The species proved to be the Rosetta Stone for deciphering the parasite from the host in graft-like fruitings. Normally, S. contortipes only forms one fruitbody on each parasitized host and the host normally fails to remain fertile and does not form its own pileus.

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

The Squamanitaceae are a family of fungi in the order Agaricales. All species in the family are agarics. Species in two genera, Dissoderma and Squamanita, are parasitic on other agarics. Members of the Squamanitaceae are found worldwide.

References

  1. Bon M (1999). "Flore mycologique d'Europe 5: Les Collybio-Marasmïoïdes et ressemblants ordre Tricholomatales, sous ordre Collybiineae". Documents Mycologiques Mémoire Hors Série. 5: 1–171.
  2. 1 2 3 Saar I, Thorn RG, Nagasawa E, Henkel TW, Cooper JA (2022). "A phylogenetic overview of Squamanita, with descriptions of nine new species and four new combinations". Mycologia. 114 (4): 769–797. doi:10.1080/00275514.2022.2059639. PMID   35695889. S2CID   249623155.