Volvopluteus gloiocephalus
| Volvopluteus gloiocephalus | |
|---|---|
_Vizzini,_Contu_%26_Justo_78697.jpg) |
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| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Pluteaceae |
| Genus: | Volvopluteus |
| Species: | V. gloiocephalus |
| Binomial name | |
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Volvopluteus gloiocephalus (DC.) Vizzini, Contu & Justo (2011) |
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| Synonyms | |
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Volvariella speciosa (Fr.) P.Kumm. (1871) |
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| Volvopluteus gloiocephalus | |
|---|---|
| Mycological characteristics | |
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gills on hymenium |
 
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cap is ovate or flat |
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hymenium is free |
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stipe has a volva |
 
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spore print is pink to pinkish-brown |
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ecology is saprotrophic |
 
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edibility: edible or edible, but unpalatable |
Volvariella speciosa (Fr.) P.Kumm. (1871)
Volvariella gloiocephala (Fr.) Gillet (1876)
cap is ovate
spore print is pink
edibility: edible
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.
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 and later sanctioned under this name by Elias Magnus Fries in 1821. The French mycologist Claude Gillet transferred it in 1878 to the genus Volvaria erected by Paul Kummer just a few years earlier in 1871. The name Volvaria was already taken, as it had been coined by De Candolle for a genus of lichens in 1805. The generic name Volvariella, proposed by the Argentinean mycologist Carlos Luis Spegazzini in 1899, 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 established under the principles of the International Code of Botanical Nomenclature.
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