Volvopluteus asiaticus
| Volvopluteus asiaticus | |
|---|---|
| Scientific classification | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Pluteaceae |
| Genus: | Volvopluteus |
| Species: | V. asiaticus |
| Binomial name | |
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Volvopluteus asiaticus Justo & Minnis (2011) |
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| Hokkaido in Japan, where the species was originally found | |
| Volvopluteus asiaticus | |
|---|---|
| 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: unknown |
cap is ovate
spore print is pink
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).
The type collection of this species was originally reported under the name Volvariella gloiocephala by Takehashi and colleagues in 2010.Morphological revision and DNA sequence data obtained from these specimens showed that this taxon belongs in the genus Volvopluteus and that is a separate species from all the other members of that genus.
The epithet asiaticus makes reference to the fact that this species was originally described, and thus far only known, from Asia. The type collection of this species is preserved at the National Museum of Nature and Science.
The cap of Volvopluteus asiaticus is between 70 and 90 mm (2.8 and 3.5 in) in diameter, more or less ovate or conical when young, then expands to convex or flat, it can have an umbo at center in mature specimens; the surface is markedly viscid in fresh basidiocarps and rugose, with powdery, minute, whitish scales. The color varies from greyish brown to brown, with a dark brown center. The gills are crowded, free from the stipe, ventricose, up to 9 mm (0.35 in) broad; white when young and turning pink with age. The stipe is 85–99 mm (3.3–3.9 in) long and 9–21 mm (0.35–0.83 in) wide, clavate with a bulbous base; the surface is white, smooth or striate. The volva is sacciform, white and with a smooth surface, up to 40 mm (1.6 in) high. The context is white on stipe and pileus, and it does not change when bruised or exposed to air, but it is dark grey-brown right under the pileipellis. Data on smell, taste and spore print were not recorded.
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