Neohygrocybe nitrata

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Nitrous waxcap
2008-10-19 Hygrocybe nitrata 20200 cropped.jpg
Neohygrocybe nitrata, Czech Republic
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Hygrophoraceae
Genus: Neohygrocybe
Species:
N. nitrata
Binomial name
Neohygrocybe nitrata
(Pers.) Kovalenko(1989)
Synonyms
  • Agaricus nitratus Pers. (1801)
  • Hygrophorus nitratus(Pers.) Fr. (1874)
  • Hygrocybe nitrata(Pers.) Wünsche (1877)
  • Camarophyllus nitratus(Pers.) Ricken (1920)

Neohygrocybe nitrata is a species of agaric (gilled mushroom) in the family Hygrophoraceae. It has been given the recommended English name of nitrous waxcap, based on its smell. [2] The species has a European distribution, occurring mainly in agriculturally unimproved grassland. Threats to its habitat have resulted in the species being assessed as globally "vulnerable" on the IUCN Red List of Threatened Species. [1]

Contents

Taxonomy

The species was first described in 1801 by mycologist Christiaan Hendrik Persoon as Agaricus nitratus. Czech mycologist Josef Herink transferred it to the genus Neohygrocybe in 1958, but this combination was not validly published. It was later validly combined by Alexander Kovalenko in 1989.

Recent molecular research, based on cladistic analysis of DNA sequences, has confirmed that Neohygrocybe nitrata is a distinct species but does not belong in Hygrocybe sensu stricto. [3] [4]

Description

Basidiocarps are agaricoid, up to 60 mm (5 in) tall, the cap convex to flat, up to 70 mm (3 in) across. The cap surface is smooth, dry, sometimes breaking up into scales when old, grey-brown. The lamellae (gills) are waxy, pale grey to buff with whiter margins. The stipe (stem) is smooth, pale grey to buff, lacking a ring. The spore print is white, the spores (under a microscope) smooth, inamyloid, ellipsoid, measuring about 8 to 9 by 4.5 to 5.5  μm. Basidiocarps have a distinctly nitrous smell. [5]

Similar species

Neohygrocybe pseudoingrata, recently described from the Czech Republic and Slovakia, has a similar nitrous smell, but basidiocarps are typically larger and paler with white stipes. [4] The more widespread European Neohygrocybe ingrata has a context that stains reddish. [5] [4]

Distribution and habitat

The Nitrous Waxcap is widespread but generally rare throughout Europe. [1] Like other waxcaps, it occurs in old, agriculturally unimproved, short-sward grassland (pastures and lawns).

Recent research suggests waxcaps are neither mycorrhizal nor saprotrophic but may be associated with mosses. [6]

Conservation

Neohygrocybe nitrata is typical of waxcap grasslands, a declining habitat due to changing agricultural practices. As a result, the species is of global conservation concern and is listed as "vulnerable" on the IUCN Red List of Threatened Species. [1] Neohygrocybe nitrata also appears on the official or provisional national red lists of threatened fungi in several European countries, including Croatia, [7] Czech Republic, [7] Denmark, [8] Germany, [9] and Norway. [7]

See also

Related Research Articles

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<i>Neohygrocybe ovina</i> Species of fungus

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

Hygrocybe spadicea is a species of agaric in the family Hygrophoraceae. It has been given the recommended English name of Date Waxcap. The species has a European distribution, occurring mainly in agriculturally unimproved grassland. Threats to its habitat have resulted in the species being assessed as globally "vulnerable" on the IUCN Red List of Threatened Species.

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

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

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

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<i>Neohygrocybe</i> Genus of fungi

Neohygrocybe is a genus of agaric fungi in the family Hygrophoraceae. Neohygrocybe species belong to a group known as waxcaps in English, sometimes also waxy caps in North America or waxgills in New Zealand. In Europe, Neohygrocybe species are typical of waxcap grasslands, a declining habitat due to changing agricultural practices. As a result, three species, Neohygrocybe ingrata, Neohygrocybe nitrata, and Neohygrocybe ovina, are of global conservation concern and are listed as "vulnerable" on the IUCN Red List of Threatened Species.

Cuphophyllus lepidopus is a species of agaric in the family Hygrophoraceae. It has been given the recommended English name of scalyfoot waxcap. The species has a European distribution, occurring mainly in agriculturally unimproved grassland. Threats to its habitat have resulted in the species being assessed as globally "vulnerable" on the IUCN Red List of Threatened Species.

References

  1. 1 2 3 4 Jordal, J. "Neohygrocybe nitrata. The IUCN Red List of Threatened Species" . Retrieved 2022-05-02.
  2. ↑ Holden L. (July 2014). "English names for fungi 2014". British Mycological Society . Retrieved 2016-02-06.
  3. ↑ Lodge DJ; et al. (2014). "Molecular phylogeny, morphology, pigment chemistry and ecology in Hygrophoraceae (Agaricales)" (PDF). Fungal Diversity. 64 (1): 1–99. doi: 10.1007/s13225-013-0259-0 . S2CID   220615978. Open Access logo PLoS transparent.svg
  4. 1 2 3 Fuljer F, Zajac M, Boertmann D, Szabóová D, Kautmanová I (2022). "Neohygrocybe pseudoingrata, a new grassland species from Slovakia and the Czech Republic". Fungal Systematics and Evolution. 9: 11–17. doi: 10.3114/fuse.2022.09.02 . PMC   9355102 . PMID   35978984.
  5. 1 2 Boertmann D. (2010). The genus Hygrocybe (2nd ed.). Copenhagen: Danish Mycological Society. p. 200. ISBN   978-87-983581-7-6.
  6. ↑ Seitzman BH, Ouimette A, Mixon RL, Hobbie EA, Hibbett DS (2011). "Conservation of biotrophy in Hygrophoraceae inferred from combined stable isotope and phylogenetic analyses". Mycologia. 103 (2): 280–290. doi:10.3852/10-195. PMID   21139028. S2CID   318326.
  7. 1 2 3 "National red Lists" . Retrieved 2022-05-02.
  8. ↑ "Den danske rødliste: Neohygrocybe nitrata" . Retrieved 2022-05-02.
  9. ↑ "Red List: Neohygrocybe nitrata". Rote Liste Zentrum. Retrieved 2022-05-02.
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