Volvopluteus gloiocephalus

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Volvopluteus gloiocephalus
Volvopluteus SoCal.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Pluteaceae
Genus: Volvopluteus
Species:
V. gloiocephalus
Binomial name
Volvopluteus gloiocephalus
(DC.) Vizzini, Contu & Justo (2011)
Synonyms [1]

Volvariella speciosa(Fr.) P.Kumm. (1871)
Volvariella gloiocephala(Fr.) Gillet (1876)

Contents

Volvopluteus gloiocephalus
Information icon.svg
Gills icon.png Gills on hymenium
Ovate cap icon.svgFlat cap icon.svg Cap is ovate or flat
Free gills icon2.svg Hymenium is free
Volva stipe icon.svg Stipe has a volva
Transparent spore print icon.svg
Transparent spore print icon.svg
 Spore print is pink to pinkish-brown
Saprotrophic fungus.svgEcology is saprotrophic
Mycomorphbox Edible.pngMycomorphbox Caution.pngEdibility is edible but not recommended

Volvopluteus gloiocephalus, commonly known as the big sheath mushroom, rose-gilled grisette, or stubble rosegill, is a species of mushroom in the family Pluteaceae. For most of the 20th century it has been known under the names Volvariella gloiocephala or Volvariella speciosa, but recent molecular studies have placed it as the type species of the genus Volvopluteus , newly created in 2011. The cap of this mushroom is about 5–15 cm (2–6 in) in diameter, varies from white to grey or grey-brown, and is markedly sticky when fresh. The gills start out as white but they soon turn pink. The stipe is white and has a sack-like volva at the base. Microscopical features and DNA sequence data are of great importance for separating V. gloiocephalus from related species. V. gloiocephalus is a saprotrophic fungus that grows on grassy fields and accumulations of organic matter like compost or woodchips piles. It has been reported from all continents except Antarctica.

Taxonomy

This taxon has a long and convoluted nomenclatural history. It was originally described as Agaricus gloiocephalus by Swiss botanist Augustin Pyramus de Candolle in 1815 [2] and later sanctioned under this name by Elias Magnus Fries in 1821. [3] The French mycologist Claude Gillet transferred it in 1878 [4] to the genus Volvaria erected by Paul Kummer just a few years earlier in 1871. [5] The name Volvaria was already taken, as it had been coined by De Candolle for a genus of lichens in 1805. [6] The generic name Volvariella , proposed by the Argentinean mycologist Carlos Luis Spegazzini in 1899, [7] would eventually be adopted for this group in 1953 after a proposal to conserve Kummer's Volvaria against De Candolle's Volvaria was rejected by the Nomenclature Committee for Fungi [8] established under the principles of the International Code of Botanical Nomenclature.

Phylogenetic relationships between Volvopluteus gloiocephalus and related species as inferred from ITS data. [9]

Despite the generic name Volvariella being adopted in 1953 the name Volvariella gloiocephala did not exist until 1986, when the placement of the species in that genus was formally proposed by mycologists Teun Boekhout and Manfred Enderle. [10] The reason for this long interval is that most 20th-century mycologists working on Volvariella (e.g. Rolf Singer, Robert L. Shaffer, Robert Kühner, Henri Romagnesi) considered the epithet "gloiocephalus" to represent a variety with dark basidiocarps of another species of Volvariella, viz. Volvariella speciosa, that has white basidiocarps, and therefore would use the name Volvariella speciosa var. gloiocephala to refer to this taxon. Boekhout & Enderle showed that white and dark basidiocarps can arise from the same mycelium, and that the epithets "gloiocephalus" proposed by De Candolle in 1815 and "speciosa" proposed by Fries in 1818 [11] should be considered to represent the same species with the former having nomenclatural priority. [10] In 1996 Boekhout and Enderle designated a neotype to serve as a representative example of the species. [12]

The phylogenetic study of Justo and colleagues showed that Volvariella gloiocephala and related taxa are a separate clade from the majority of the species traditionally classified in Volvariella and therefore another name change was necessary, now as the type species of the newly proposed genus Volvopluteus . [13]

The epithet gloiocephalus comes from the Greek terms gloia (γλοία = glue or glutinous substance) and kephalē (κεφαλή = head) meaning "with a sticky head" making reference to the viscid cap surface. It is commonly known as the "big sheath mushroom", [14] "rose-gilled grisette" [15] or the "stubble rosegill". [16]

Description

Young and mature specimens Volvopluteus gloiocephalus JPG4.jpg
Young and mature specimens
Fruit body with grey cap Volvopluteus gloiocephalus (DC.) Vizzini, Contu & Justo 138276.jpg
Fruit body with grey cap

The cap of Volvopluteus gloiocephalus is between 5 and 15 cm (2 and 6 in) in diameter, more or less ovate or conical when young, then expands to convex or flat, sometimes with a slight central depression in old specimens. The surface is markedly viscid in fresh basidiocarps; the color ranges from pure white to grey or greyish brown. The gills are crowded, free from the stipe, ventricose (swollen in the middle), and up to 2 cm (0.8 in) broad; they are white when young but turn pink with age. The stipe is 5–22.5 cm (2–9 in) long and 0.7–2.5 cm (0.3–1.0 in) wide, cylindrical, broadening towards the base; the surface is white, smooth or slightly pruinose (covered with fine white powdery granules). The volva is 2–3 cm (0.8–1.2 in) high, sacciform (pouch-like), white and has a smooth surface. The flesh is white on stipe and cap and it does not change when bruised or exposed to air. Smell and taste vary from indistinct to raphanoid (radish-like) or similar to raw peeled potatoes. The spore print is pinkish brown. [9] [17] [18]

The basidiospores are ellipsoid and measure 12–16 by 8–9.5  μm. Basidia are 20–35 by 7–15 μm and usually four-spored, but sometimes two-spored basidia can occur. Pleurocystidia are 60–90 by 20–50 μm with variable morphology: club-shaped, fusiform, ovoid, and sometimes with a small apical papilla. Cheilocystidia are 55–100 by 15–40 μm with similar morphology to the pleurocystidia; they completely cover the gill edge. The cap cuticle (pileipellis) is an ixocutis [19] (parallel hyphae wide embedded in a gelatinous matrix). Stipitipellis is a cutis [19] (parallel hyphae not embedded in a gelatinous matrix). Caulocystidia are sometimes present, measuring 70–180 by 10–25 μm; they are mostly cylindrical. [9] [17] Clamp connections are absent from the hyphae. [20]

Microscopy
Volvopluteus gloiocephalus 78698.jpg Pleurocystidia of Volvopluteus gloiocephalus.jpg Cheilocystidia of Volvopluteus gloiocephalus.jpg
Basidiospores; small divisions are 1 μmPleurocystidiaCheilocystidia

Edibility

Volvopluteus gloiocephalus is edible, although considered watery and poor in quality. [18] It was once sold in markets in Perth, Australia. [21] Mature fruit bodies, collected in sufficient quantity, can be used to prepare soup, or added to dishes where wild mushrooms are used, such as stews and casseroles. The mushrooms are best used fresh as they do not preserve well. [15] Young specimens of Volvopluteus gloiocephalus have white gills so it is possible to mistake them for an Amanita and vice versa. [14] In the United States, there have been several cases of Asian immigrants collecting and eating death caps ( Amanita phalloides ), under the mistaken assumption that they were Volvariella. [22] A Greek study determined the nutritional composition of fruit bodies: protein 1.49 g/100 g fresh weight (fw), 18.36 g/100 g dry weight (dw); fat 0.54 g/100 g fw, 6.65 g/100g dw; carbohydrates 5.33 g/100g fw, 65.64 g/100 g dw. [23]

Similar species

Molecular analyses of the internal transcribed spacer region clearly separate the four species currently recognized in Volvopluteus, but morphological identification can be more difficult due to the sometimes overlapping morphological variation among the species. Size of the fruit bodies, color of the cap, spore size, presence or absence of cystidia and morphology of the cystidia are the most important characters for morphological species delimitation in the genus. V. earlei has smaller fruit bodies (cap less than 5 cm (2 in) in diameter), has no pleurocystidia (usually), and the cheilocystidia usually have a very long apical excrescence (outgrowth). In V. asiaticus the majority of the pleurocystidia have an apical excrescence up to 10–15 μm long and the cheilocystidia are predominantly lageniform (flask-shaped). V. michiganensis has smaller basidiospores, on average less than 12.5 μm long. [9] Volvariella acystidiata , known from central Africa (Zaire) and Italy, somewhat resembles Volvopluteus gloiocephalus. It can be distinguished from the latter by its smaller fruit bodies, with caps up to 3 cm (1.2 in) in diameter, and, microscopically, by the complete absence of cheilo- and pleurocystidia. [24]

Ecology, habitat, and distribution

Volvopluteus gloiocephalus is a saprotrophic mushroom that grows on the ground in gardens, grassy fields, both in and outside forest areas, and on accumulations of vegetable matter like compost or woodchips piles. [9] [17] It has also been reported fruiting in greenhouses. [14] In China, it grows in bamboo thickets. It usually fruits in groups of several basidiocarps but it can also be found growing solitary. [9] [17] It is not unusual for a season of "spectacular" fruiting to be followed by several years with no appearance of the mushroom. [25]

This species has been reported from all continents except Antarctica, usually under names such as Volvariella gloiocephala or Volvariella speciosa. Molecular data have so far corroborated its occurrence in Europe and North America but records from other continents remain unconfirmed. [9]

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The Pluteaceae are a family of small to medium-sized mushrooms which have free gill attachment and pink spores. Members of Pluteaceae can be mistaken for members of Entolomataceae, but can be distinguished by the angled spores and attached gills of the Entolomataceae. The four genera in the Pluteaceae comprise the widely distributed Volvariella and Pluteus, the rare Chamaeota, and Volvopluteus, which was newly described in 2011 as a result of molecular analysis. The Dictionary of the Fungi estimates there are 364 species in the family.

<i>Amanita brunnescens</i> Species of fungus

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<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.

<i>Mythicomyces</i> Genus of fungi

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

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<i>Macrolepiota clelandii</i> Species of mushroom-forming fungus

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<i>Entoloma austroprunicolor</i> Species of fungus

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<i>Saproamanita thiersii</i> Species of fungus

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

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<i>Volvopluteus</i> Genus of fungi

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<i>Volvariella bombycina</i> Species of mushroom in the family Pluteaceae

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

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<i>Agrocybe putaminum</i> Species of fungus

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Psilocybe allenii is a species of agaric fungus in the family Hymenogastraceae. Described as new to science in 2012, it is named after John W. Allen, who provided the type collection. It is found in the northwestern North America from British Columbia, Canada to Los Angeles, California, most commonly within 10 miles (16 km) of the Pacific coast.

<i>Volvopluteus earlei</i> Species of fungus

Volvopluteus earlei is a species of mushroom in the family Pluteaceae. It was originally described in 1911 by American mycologist William Alphonso Murrill as Volvariopsis earlei, based on collections made in a Cuban banana field. The fungus was later shuffled to the genera Volvaria and Volvariella before molecular studies placed it in Volvopluteus, a genus newly described in 2011.

<i>Volvopluteus michiganensis</i> Species of fungus

Volvopluteus michiganensis is a species of mushroom in the family Pluteaceae. It was originally described under the name Pluteus michiganensis but molecular studies have placed it in the Volvopluteus, a genus described in 2011. The cap of this mushroom is about 7–9 cm (2.8–3.5 in) in diameter, gray, and has a cracked margin that is sticky when fresh. The gills start out as white but they soon turn pink. The stipe is white and has a volva at the base. Microscopical features and DNA sequence data are of great importance for separating this taxon from related species. V. michiganensis is a saprotrophic fungus that was originally described as growing on sawdust. It has only been reported from Michigan (US) and the Dominican Republic.

<i>Volvopluteus asiaticus</i> Species of fungus

Volvopluteus asiaticus is a species of mushroom in the Pluteaceae family. The cap of this mushroom is about 70–90 mm (2.8–3.5 in) in diameter, greyish brown to brown. The gills start out white but they soon turn pink. The stipe is white and has a volva at the base. Microscopical features and DNA sequence data are of great importance for separating this taxon from related species. V. asiaticus is a saprotrophic fungus that was originally described as growing on the ground, in the humus layer. It is only known from Hokkaido (Japan).

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

Pholiota nubigena, commonly known as the gastroid pholiota or the bubble gum fungus, is a species of secotioid fungus in the family Strophariaceae. It is found in mountainous areas of the western United States, where it grows on rotting conifer wood, often fir logs. It fruits in spring, often under snow, and early summer toward the end of the snowmelt period in high mountain forests. Fruit bodies appear similar to unopened mushrooms, measuring 1–4 centimetres tall with 1–2.4 cm diameter caps that are whitish to brownish. They have a short but distinct whitish stipe that extend through the internal spore mass (gleba) of the fruit body into the cap. The gleba consists of irregular chambers made of contorted gills that are brownish in color. A whitish, cottony partial veil is present in young specimens, but it often disappears in age and does not leave a ring on the stipe.

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

Pluteus americanus is a North American and Russian psychedelic mushroom that grows on hardwoods.

References

  1. ↑ "Volvopluteus gloiocephalus (DC) Vizzini, Contu & Justo 2011". MycoBank. International Mycological Association. Retrieved 2013-04-10.
  2. ↑ Lamarck J-B, de Candolle AP (1815). Flore française: ou, Descriptions succinctes de toutes les plantes qui croissent naturellement en France, disposées selon une novelle méthode d'analyse, et précédées par un exposé des principes élémentaires de la botanique (in French). Vol. 6. p. 52.
  3. ↑ Fries EM (1821). Systema Mycologicum (in Latin). Vol. 1. Lundin, Sweden: Ex Officina Berlingiana. p. 278.
  4. ↑ Gillet CC (1878). Les champignons (fungi, hyménomycètes) qui croissent en France. Description et iconographie propriétés utiles ou vénéneuses. Paris, France: J. B. Baillière. p. 387.
  5. ↑ Kummer P. (1871). Der Führer in die Pilzkunde : Anleitung zum methodischen, leichten und sichern Bestimmen der in Deutschland vorkommenden Pilze : mit Ausnahme der Schimmel- und allzu winzigen Schleim- und Kern-Pilzchen. Zerbst, Germany: Verlag von E. Luppe's Buchhandlung. p. 387.
  6. ↑ Lamarck J-B, de Candolle AP (1805). Flore française: ou, Descriptions succinctes de toutes les plantes qui croissent naturellement en France, disposées selon une novelle méthode d'analyse, et précédées par un exposé des principes élémentaires de la botanique (in French). p. 572.
  7. ↑ Spegazzini CL (1899). "Fungi Argentini novi vel critici". Anales del Museo Nacional de Historia Natural de Buenos Aires. 6: 81–365 (see p. 119).
  8. ↑ Special Committee for Fungi (1953). "Disposition of nomina generica conservanda for Fungi". Taxon. 2 (2): 29–32. doi:10.1002/j.1996-8175.1953.tb01455.x. JSTOR   1217581.
  9. 1 2 3 4 5 6 7 Justo A, Minnis AM, Ghignone S, Menolli Jr N, Capelari M, Rodríguez O, Malysheva E, Contu M, Vizzini A (2011). "Species recognition in Pluteus and Volvopluteus (Pluteaceae, Agaricales): Morphology, geography and phylogeny" (PDF). Mycological Progress. 10 (4): 453–79. doi:10.1007/s11557-010-0716-z. hdl: 2318/78430 . S2CID   1719751. Archived from the original (PDF) on 2013-10-19. Retrieved 2013-04-11.
  10. 1 2 Boekhout T, Enderle M (1986). "Volvariella gloiocepha (DC.: Fr.) Boekhout & Enderle comb. nov". Beiträge zur Kenntnis der Pilze Mitteleuropas. 2: 77–79.
  11. ↑ Fries EM (1818). Observationes mycologicae (in Latin). Vol. 2. Hafnia (Copenhagen), Denmark: sumptibus G. Bonnieri. p. 1.
  12. ↑ Boekhout T, Enderle M (1996). "Typification of Volvariella gloiocephala (DC: Fr) Boekhout & Enderle". Persoonia. 16 (2): 249–51.
  13. ↑ Justo A, Vizzini A, Minnis AM, Menolli Jr N, Capelari M, Rodríguez O, Malysheva E, Contu M, Ghignone S, Hibbett DS (2011). "Phylogeny of the Pluteaceae (Agaricales, Basidiomycota): Taxonomy and character evolution" (PDF). Fungal Biology. 115 (1): 1–20. doi:10.1016/j.funbio.2010.09.012. hdl: 2318/74776 . PMID   21215950. Archived from the original (PDF) on 2016-03-03. Retrieved 2013-04-11.
  14. 1 2 3 McKnight VB, McKnight KH (1987). A Field Guide to Mushrooms: North America. Peterson Field Guides. Boston: Houghton Mifflin. pp. 253–4. ISBN   978-0-395-91090-0.
  15. 1 2 Burrows I. (2005). Food from the Wild. London: New Holland Publishers. p. 116. ISBN   978-1-84330-891-1.
  16. ↑ Holden EM (2003). "Recommended English Names for Fungi in the UK" (PDF). British Mycological Society. Archived from the original (PDF) on 2013-03-02. Retrieved 2011-12-17.
  17. 1 2 3 4 Boekout T. (1990). "Volvariella". In Bas; et al. (eds.). Flora Agaricina Neerlandica. Vol. 2 (1st ed.). Rotterdam, Netherlands: AA Balkema. pp. 56–64. ISBN   978-90-6191-972-8.
  18. 1 2 Davis M, Sommer R, Menge JA (2012). Field Guide to Mushrooms of Western North America (1st ed.). California: University of California Press. p. 192. ISBN   978-0-520-27108-1.
  19. 1 2 Vellinga EC (1988). "Glossary". In Bas; et al. (eds.). Flora Agaricina Neerlandica. Vol. 1 (1st ed.). Rotterdam, Netherlands: AA Balkema. pp. 54–64. ISBN   978-90-6191-859-2.
  20. ↑ Zhishu B, Zheng G, Taihui L (1993). The Macrofungus Flora of China's Guangdong Province (Chinese University Press). New York: Columbia University Press. p. 349. ISBN   978-962-201-556-2.
  21. ↑ Bougher NL, Syme K (1998). Fungi of Southern Australia. Nedlands: University of Western Australia Press. p. 226. ISBN   978-1-875560-80-6.
  22. ↑ Marley G. (2010). Chanterelle Dreams, Amanita Nightmares: The Love, Lore, and Mystique of Mushrooms. White River Junction: Chelsea Green Publishing. p. 108. ISBN   978-1-60358-214-8.
  23. ↑ Ouzini PK, Riganakos KA (2007). "Nutritional value and metal content profile of Greek wild edible fungi". Acta Alimentaria. 36 (1): 99–110. doi:10.1556/AAlim.36.2007.1.11.
  24. ↑ Vizzini A, Contu M (2010). "Volvariella acystidiata (Agaricomycetes, Pluteaceae), an African species new to Europe, with two new combinations in Volvariella" (PDF). Mycotaxon. 112: 25–29. doi:10.5248/112.24. hdl: 2318/77288 . S2CID   88436813.
  25. ↑ Healy RA, Huffman DR, Tiffany LH, Knaphaus G (2008). Mushrooms and Other Fungi of the Midcontinental United States. Bur Oak Guide. Iowa City: University of Iowa Press. p. 98. ISBN   978-1-58729-725-0.
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