Cystoderma amianthinum

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Cystoderma amianthinum
Amiant-Kornchenschirmling Cystoderma amianthinum.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Squamanitaceae
Genus: Cystoderma
Species:
C. amianthinum
Binomial name
Cystoderma amianthinum
(Scop.) Fayod (1889)
Synonyms
  • Agaricus amianthinusScop. (1772)
Cystoderma amianthinum
Information icon.svg
Gills icon.png Gills on hymenium
Convex cap icon.svgUmbonate cap icon.svg Cap is convex or umbonate
Adnexed gills icon2.svg Hymenium is adnexed
Ring stipe icon.svg Stipe has a ring
Transparent spore print icon.svg
Spore print is white
Saprotrophic fungus.svgEcology is saprotrophic
Mycomorphbox Caution.pngEdibility is not recommended

Cystoderma amianthinum, commonly called the saffron parasol, the saffron powder-cap, or the earthy powder-cap, is a small orange-ochre, or yellowish-brown, gilled mushroom. It grows in damp mossy grassland, in coniferous forest clearings, or on wooded heaths. It is probably the most common of the small genus Cystoderma . It is not recommended for consumption due to its resemblance to poisonous species.

Contents

Taxonomy

Cystoderma amianthinum was first noted by the Italian-Austrian naturalist Giovanni Antonio Scopoli, who called it Agaricus amianthinus in 1772. The present generic name Cystoderma was erected by Swiss mycologist Victor Fayod in 1889, and is roughly translated as 'blistered skin', and is probably a reference to the appearance of the pellicle (cap skin). [1]

Description

The cap is usually between 2 and 5 cm (1 and 2 in) in diameter, convex to bell-shaped, and later flat with a slight depression around a low umbo (central boss). It is dry and powdery, often with a shaggy or fringed margin (appendiculate), and is saffron-yellow or orange-ochre. The stem is cylindrical, and has a flaky-granular sheath beneath a fleeting, powdery ring. The gills are white initially, and become creamy later. They are adnexed (narrowly attached to the stem), and initially quite crowded. [2] The spore print is white. [3] The flesh is thin and yellowish, with an odor that is unpleasant or resembles husked corn. [4]

A very similar form with a markedly radially wrinkled cap, has been separated by some authors, and given the binomial Cystoderma rugoso-reticulatum. [2] Some forms have a whitish yellow cap. [4]

Cystodermella granulosa and Cystodermella cinnabarina are both redder as a rule, and have adnate gills (broadly attached to the stem). [3]

Distribution and habitat

Cystoderma amianthinum is widespread in Europe and North America, and common in northern temperate zones. It occurs in mossy woodland, on heaths, amongst grass or bracken, and sometimes with willow. [5] It is often found on acidic soils. [6]

Edibility

Eating is not advised as the deadly toxic Lepiota castanea is a lookalike. [7] [8]

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References

  1. David Arora (1986). Mushrooms Demystified . Ten Speed Press. ISBN   0-89815-169-4.
  2. 1 2 Helmut and Renate Grunert (1992). Field Guide to MUSHROOMS of Britain and Europe (English ed.). The Crowood Press Ltd. ISBN   1-85223-592-6.
  3. 1 2 Roger Phillips (2006). Mushrooms. Pan MacMillan. p. 138. ISBN   0-330-44237-6.
  4. 1 2 Trudell, Steve; Ammirati, Joe (2009). Mushrooms of the Pacific Northwest. Timber Press Field Guides. Portland, OR: Timber Press. p. 78. ISBN   978-0-88192-935-5.
  5. Thomas Laessoe (1998). Mushrooms (flexi bound). Dorling Kindersley. ISBN   0-7513-1070-0.
  6. Regis Courtecuisse and Bernard Duhem (1995). Mushrooms and Toadstools of Britain and Europe. Harper Collins. ISBN   0-00-220025-2.
  7. Davis, R. Michael; Sommer, Robert; Menge, John A. (2012). Field Guide to Mushrooms of Western North America. Berkeley: University of California Press. pp. 133–134. ISBN   978-0-520-95360-4. OCLC   797915861.
  8. Phillips, Roger (2010). Mushrooms and Other Fungi of North America . Buffalo, NY: Firefly Books. p.  40. ISBN   978-1-55407-651-2.