Peziza praetervisa

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Peziza praetervisa
Peziza praetervisa.jpg
Photographed in the Peace River area, British Columbia, Canada
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Pezizomycetes
Order: Pezizales
Family: Pezizaceae
Genus: Peziza
Species:
P. praetervisa
Binomial name
Peziza praetervisa
Bres. (1897)
Synonyms [1]
  • Pezizella obscurata Rehm (1905)
  • Galactinia praetervisa(Bres.) Boud. (1907)
  • Aleuria viridaria var. obscurata(Rehm) Boud. (1907)
  • Aleuria praetervisa(Bres.) Bres. (1933)
  • Galactinia praetervisa var. minor J.Moravec (1969)

Peziza praetervisa, commonly known as the purple fairy cup or the fireplace cup, [2] is a species of fungus in the genus Peziza , family Pezizaceae. Recognized by its flattened, purple, cup-like fruitbodies, this widespread fungus typically grows scattered or in clusters on burnt ground.

Contents

Taxonomy

The fungus was first described scientifically in 1897 by Giacomo Bresadola. [3]

Description

Fruitbodies resemble flattened cups with diameters of up to 3 cm (1.2 in). The inner spore-bearing surface, the hymenium, is purple to purple-brown, but lightens to brown in age. The exterior surface is pale purple and scurfy (covered with small flakes or scales that are shed from the underlying surface). [4] This species is sessile, and does not have a stipe. The flesh is thin and mauve-colored. [5]

Microscopic characteristics

Spores are elliptical, hyaline, with small, fine warts on the surface, and have dimensions of 12–14 x 7–8  μm. They are biguttulate, containing two oil droplets at either end of the spore. The asci are 250–300 x 10–12 μm. Like other Pezizales, the asci open at maturity by means of an apical, lid-like flap of tissue termed an operculum. The paraphyses are club-shaped, filled with violet granules, and have bent tips; they are up to 7 μm wide. [4]

Edibility

The edibility of the Pezizaceae family is largely untested. [6]

Habitat and distribution

Peziza praetervisa is a widespread fungus that grows in scattered clusters on burned soil, [7] and is often found on the remains of old campfires. [4] It is found in Europe and North America. [8]

Similar species

Depending on humidity and other environmental factors, P. praetervisa can resemble Peziza violacea , but may be distinguished from the latter by its dark purple hymenium, and microscopically by its biguttulate, warty ascospores. Pachyella babingtonii also has a purple brown hymenium, but is smaller and translucent in appearance.

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<i>Peziza domiciliana</i> Species of fungus

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<i>Peziza varia</i> Species of fungus

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<i>Peziza fimeti</i> Species of fungus

Peziza fimeti is a species of ascomycete fungus belonging to the family Pezizaceae. Found in Europe and North America, the fungus grows on cow dung. It produces small, light brown, cup-shaped fruit bodies up to 2 cm (0.8 in) in diameter. The asci are cylindrical, with dimensions of up to 280 µm long and 18 µm in diameter. The spores are ellipsoid and measure 8 by 16 µm.

References

  1. "GSD Species Synonymy: Peziza praetervisa Bres". Species Fungorum. CAB International. Retrieved 2015-02-16.
  2. "P. praetervisa" . Retrieved 2009-02-12.
  3. Bresadola G, Saccardo PA (1897). "Enumerazione dei Funghi della Valsesia raccolti dal Ch. Ab. Antonio Carestia". Malpighia (in Italian). 11: 214–325 (see p. 266).
  4. 1 2 3 Tylutki EE (1979). Mushrooms of Idaho and the Pacific Northwest. Moscow, Idaho: University Press of Idaho. p. 96. ISBN   0-89301-062-6.
  5. "Rogers Mushrooms | Mushroom Pictures & Mushroom Reference". Archived from the original on 2010-12-31. Retrieved 2009-02-12.
  6. "Trial field key to the PEZIZACEAE in the Pacific Northwest" . Retrieved 2009-02-12.
  7. Dennis RWG (1978). British Ascomycetes. Lubrecht & Cramer. ISBN   3-7682-0552-5.
  8. Beug MW, Bessette AE, Bessette AR (2014). Ascomycete Fungi of North America: A Mushroom Reference Guide. Austin, Texas: University of Texas Press. p. 216. ISBN   978-0-292-75452-2.