Pholiotina

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Pholiotina
Pholiotina smithii 200609.jpg
Pholiotina smithii
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Bolbitiaceae
Genus: Pholiotina
Fayod (1889)
Type species
Pholiotina vexans [1]
(P.D.Orton) Bon (1991)
Species

Pholiotina is a genus of small agaric fungi. It was circumscribed by Swiss mycologist Victor Fayod in 1889 for Conocybe -like species with partial veils. [2] [3] The genus has since been expanded to include species lacking partial veils. [3]

Contents

Taxonomic details

The genus Pholiotina is defined as small thin Mycena -like mushrooms, with an hymenoderm pileipellis, a dry cap surface, cystidia that are sub-capitate to blunt, and spores which are rusty brown in deposit. Spores of mushrooms of this genus are thick walled, smooth and have a germ pore.

Victor Fayod designated Pholiotina blattaria as the type species of Pholiotina, but this name was used for many different species of Pholiotina with partial veils and it is unclear which species is really P. blattaria, which makes it a nomen dubium. [1] He designated a lectotype for this species in the same publication, and microscopic examination revealed that this specimen belongs to the species P. vexans, making P. vexans the current type species of Pholiotina. [1]

Some authors considered Pholiotina part of the genus Conocybe . However, a molecular phylogenetics study has shown that, while Pholiotina as currently defined is polyphyletic, the three clades that have been placed in Pholiotina are more closely related to other genera than to Conocybe. The two genera can be distinguished microscopically: Pholiotina contains a differentiated central zone called a mediostratum that is lacking in Conocybe. Additionally, most Pholiotina species have cystidia with rounded to tapered tips, compared to the enlarged, globular cystidial tips of Conocybe. [4]

In a 2007 publication, Hausknecht and Krisai-Greilhuber devised an infrageneric classification that includes the sections Piliferae and Vestitae, and the series Aeruginosa, Aporos, Appendiculata, Brunnea, Coprophila, Filipes, Keniensis, Mairei, Pygmaeoaffinis, Resinosocystidiata, Sulcata, Teneroides, Utriformis, and Vexans. [1] However, a 2013 study by Tóth et al. found Pholiotina as it is currently defined to be polyphyletic, with one clade forming the sister group to Descolea , another forming the sister group to Bolbitius and another forming the sister group to Galerella nigeriensis . [3] All the species of Pholiotina with partial veils and some species without, including the type species, P. vexans, formed a monophyletic clade closely related to Descolea. [3] It is likely that the species in this clade will be kept as Pholiotina species, while the species in the other two clades will be removed to other genera, but this has not happened yet. [3] This study also found some of the sections named by Hausknecht and Krisai-Greilhuber to be paraphyletic or polyphyletic. [3]

Notable species

The genus Pholiotina includes the psychoactive species P. cyanopus . [5] As Pholiotina was polyphyletic under its previous definition, [3] many species were subsequently transferred to other genera.

Related Research Articles

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Agrocybe is a genus of mushrooms in the family Strophariaceae. The genus has a widespread distribution, and contains about 100 species.

<i>Conocybe</i> Genus of fungi

Conocybe is a genus of mushrooms with Conocybe tenera as the type species and at least 243 other species. There are at least 50 different species in North America.

<i>Conocybe rugosa</i> Species of mushroom

Conocybe rugosa is a common species of mushroom that is widely distributed and especially common in the Pacific Northwest of the United States. It grows in woodchips, flowerbeds and compost. It has been found in Europe, Asia and North America. It contains the same mycotoxins as the death cap mushroom. Conocybe rugosa was originally described in the genus Pholiotina, and its morphology and a 2013 molecular phylogenetics study supported its continued classification there.

<i>Conocybe tenera</i> Species of fungus

Conocybe tenera, commonly known as the brown dunce cap or common cone head, is a widely distributed member of the genus Conocybe. This mushroom is the type species for the genus Conocybe.

<i>Pholiotina cyanopus</i> Species of fungus

Pholiotina cyanopus is a species of fungus that contains psychoactive compounds including psilocybin and the uncommon aeruginascin. Originally described as Galerula cyanopus by American mycologist George Francis Atkinson in 1918. It was transferred to Conocybe by Robert Kühner in 1935 before being transferred to Pholiotina by Rolf Singer in 1950. A 2013 molecular phylogenetics study found it to belong to a group of species currently assigned to Pholiotina that are more closely related to Galerella nigeriensis than to Pholiotina or Conocybe. It is likely that it will be moved to a different genus in the future, but this has not happened yet.

<span class="mw-page-title-main">Volva (mycology)</span> Cup-like structure at the base of a mushroom

In mycology, a volva is a cup-like structure at the base of a mushroom that is a remnant of the universal veil, or the remains of the peridium that encloses the immature fruit bodies of gasteroid fungi. This macrofeature is important in wild mushroom identification because it is an easily observed, taxonomically significant feature that frequently signifies a member of Amanitaceae. This has particular importance due to the disproportionately high number of deadly poisonous species contained within that family.

<i>Melanoleuca</i> Genus of fungi

Melanoleuca is a poorly known genus of saprotrophic mushrooms traditionally classified in the family Tricholomataceae. Most are small to medium sized, white, brown, ocher or gray with a cylindrical to subcylindrical stipe and white to pale yellowish gills. The basidiospores are ellipsoid and ornamented with amyloid warts. Melanoleuca is considered a difficult group to study due to their macroscopic similarities among species and the need of a thorough microscopic analysis to separate species. DNA studies have determined that this genus is closely related to Amanita and Pluteus and that it does not belong to the family Tricholomataceae.

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

The Bolbitiaceae are a family of mushroom-forming basidiomycete fungi. A 2008 estimate placed 17 genera and 287 species in the family. Bolbitiaceae was circumscribed by mycologist Rolf Singer in 1948.

<i>Chalciporus</i> Genus of fungi

Chalciporus is a genus of fungi in the family Boletaceae. There are approximately 25 species in the genus.

<i>Descolea</i> Genus of fungi

Descolea is a genus of fungi in the family Bolbitiaceae. Described by mycologist Rolf Singer in 1952, the widespread genus contains about 15 species. It was formerly placed in the family Cortinariaceae because of its limoniform basidiospores and its ectomycorrhizal lifestyle. A 2013 molecular phylogenetics study by Tóth et al. found it to be closely related to the genus Pholiotina The genus Pseudodescolea, erected for the single Descolea-like species Pseudodescolea lepiotiformis, was formerly considered distinct until a 1990 study found it to be a synonym of Descolea antarctica.

Victor Fayod was a Swiss mycologist, who created an influential novel classification of the agaric fungi and who described a number of new genera and species.

<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>Psilocybe makarorae</i> Species of fungus

Psilocybe makarorae is a species of psilocybin mushroom in the family Hymenogastraceae. Officially described as new to science in 1995, it is known only from New Zealand, where it grows on rotting wood and twigs of southern beeches. The fruit body (mushroom) has a brownish cap with lighter coloured margins, measuring up to 3.5 cm (1.4 in) wide. The cap shape is either conical, bell-shaped, or flat depending on the age of the mushroom, and it features a prominent umbo. Although the whitish stem does not form a true ring, it retains remnants of the partial veil that covers and protects the gills of young fruit bodies. P. makarorae mushrooms can be distinguished from the similar North American species Psilocybe caerulipes by microscopic characteristics such as the presence of cystidia on the gill faces (pleurocystidia), and cheilocystidia with more elongated necks. Based on the bluing reaction to injury, P. makarorae is presumed to contain the psychedelic compounds psilocybin and psilocin.

<i>Gymnopilus maritimus</i> Species of fungus

Gymnopilus maritimus is a fungus species of the family Hymenogastraceae first collected in northern Sardinia, Italy, in 2006. The species produces moderately sized, sturdy mushrooms of a reddish-orange colour. The cap, which can measure up to 70 millimetres (3 in) across, is covered in orange fibrils, and sometimes has small scales. The yellowish stem measures up to 110 mm (4 in) in length by 8 mm (0.3 in) in width, and sometimes shows remnants of the partial veil. The mushrooms have thick gills of a variable colour, ranging from yellow to rust but staining darker, and the yellow flesh has a mild taste. The mushrooms leave a rusty-brown spore print, while the spores themselves measure from 7.5–11.5 micrometres (0.00030–0.00045 in) in length. The species is most similar in appearance to G. arenophilus and G. fulgens, but can be differentiated from both morphologically. Despite the similarities, it is not closely related to either, suggesting convergent evolution. Instead, within the genus Gymnopilus, it is most closely related to the spectabilis–imperialis clade. However, it is not particularly similar to any of its closest relatives.

Roridomyces appendiculatus is a species of fungus in the genus Roridomyces, family Mycenaceae. It is found in Europe.

<i>Conocybe aurea</i> Species of fungus

Conocybe aurea is a basidiomycete fungus in the family Bolbitiaceae.

Conocybe moseri is a mushroom species in the family Bolbitiaceae. It was described as new to science in 1980 by mycologist Roy Watling, from collections made in France. The specific epithet moseri honours Austrian mycologist Meinhard Moser. The fungus has been reported from the United Kingdom, growing in grassy areas, fields, and edges of woods. In 1995, it was recorded from Switzerland, from Ukraine in 2007, and from Russia in 2007. It was reported from India in 2015, where it was found growing on cattle dung.

Conocybe velutipes is a species of mushroom in the Bolbitiaceae family. It contains the psychedelic alkaloids psilocybin and psilocin.

<i>Conocybe macrospora</i> Species of fungus

Conocybe macrospora is a species of mushroom-producing fungus in the family Bolbitiaceae.

References

  1. 1 2 3 4 Hausknecht A, Krisai-Greilhuber I (2007). "Infrageneric division of the genus Pholiotina – a classical approach". Österreichische Zeitschrift für Pilzkunde. 16 (1): 133–45.
  2. Fayod VF. (1889). "Prodrome d'une histoire naturelle des Agaricinés". Annales des Sciences Naturelles, Botanique. VII (in French). 9: 181–411 (see p. 359).
  3. 1 2 3 4 5 6 7 Tóth, Annamária; Hausknecht, Anton; Krisai-Greilhuber, Irmgard; Papp, Tamás; Vágvölgyi, Csaba Vágvölgyi; Nagy, László G. (2013). "Iteratively Refined Guide Trees Help Improving Alignment and Phylogenetic Inference in the Mushroom Family Bolbitiaceae". PLOS ONE. 8 (2): e56143. Bibcode:2013PLoSO...856143T. doi: 10.1371/journal.pone.0056143 . PMC   3572013 . PMID   23418526.
  4. Mukerji KG. (2010). Taxonomy and Ecology of Indian Fungi. I. K. International Pvt. p. 204. ISBN   978-93-8002-692-3.
  5. Hausknecht A, Krisai-Greilhuber I, Voglmayr H (2004). "Type studies in North American species of Bolbitiaceae belonging to the genera Conocybe and Pholiotina". Österreichische Zeitschrift für Pilzkunde. 13: 153–235 (see pp. 180, 212).