Tricholoma fracticum

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Tricholoma fracticum
Fastberingter ritterling Tricholoma batschii.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Tricholomataceae
Genus: Tricholoma
Species:
T. fracticum
Binomial name
Tricholoma fracticum
Synonyms [1]
  • Agaricus fracticusBritzelm. (1893)
  • Agaricus cuneiformeBritzelm. (1893) [1]
  • Armillaria fractica(Britzelm.) Sacc. (1895)
  • Tricholoma cuneiformeBritzelm. (1895) [1]
Tricholoma fracticum
Information icon.svg
Gills icon.png Gills on hymenium
Convex cap icon.svg Cap is convex
Subdecurrent gills icon2.svg Hymenium is subdecurrent
Ring stipe icon.svg Stipe has a ring
Transparent spore print icon.svg
Spore print is white
Mycorrhizal fungus.svgEcology is mycorrhizal
Mycomorphbox Inedible.pngEdibility is inedible

Tricholoma fracticum is a sturdy mushroom of the agaric genus Tricholoma with a red-brown cap and a harshly bitter taste. [2] It is mycorrhizal with conifers, primarily of the genus Pinus, [2] and can be found in California.

Contents

Taxonomy

First described as Agaricus fracticus by German mycologist Max Britzelmayr in 1893, [3] it was transferred to the genus Tricholoma in 1984 by Hanns Kreisel. [4] Though it has been occasionally listed as a synonym of Tricholoma batschii, a European species, T. fracticum possesses larger spores and 2-spored basidia in contrast with T. batschii's 4-spored basidia, [5] and they are currently considered separate species. [1]

Description

Tricholoma fracticum is distinguishable with relative ease by noting the combination of a red-brown cap that becomes viscid (slimy) when wet, and a quickly disappearing partial veil that leaves a flimsy ring or sometimes only a delineation in stipe color up towards the gills. No other Tricholoma in California has both of these features. [5] Also worth noting is its sharp, bitter taste, which is always present in this species and distinguishes it from lookalikes such as Tricholoma aurantium, which has a blander, mealy taste. The cap is more or less smooth, with an initially inrolled margin, 3-10cm in diameter, broadly convex and flattening slightly in maturity. Gills are whitish, attached, and notched to subdecurrent. Stem sturdy, 2-8cm long, 1-2.5cm thick, whitish near apex, orange-brown below, with a flimsy but usually present ring. Flesh white, not bruising or changing upon exposure. Odor indistinct. Spore print white. [2]

See also

Related Research Articles

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References

  1. 1 2 3 4 "Tricholoma fracticum (Britzelm.) Kreisel :700, 1984". MycoBank. International Mycological Association. Retrieved 2013-03-23.
  2. 1 2 3 Kuo, Michael (2006). "Tricholoma fracticum". MushroomExpert. Retrieved January 19, 2022.
  3. Britzelmayr M. (1893). "Materialien zur Beschreibung der Hymenomyceten 1". Botanisches Centralblatt (in German). 54 (2): 33–40.
  4. Kreisel H. (1984). "Beitrag zur Nomenklatur einiger Großpilze II". Feddes Repertorium Specierum Novarum Regni Vegetabilis (in German). 95 (9–10): 699–800. doi:10.1002/fedr.4910950919.
  5. 1 2 Shanks, Kristen (1994). "A Systematic Study of Tricholoma in California" (PDF). Retrieved January 19, 2022.{{cite journal}}: Cite journal requires |journal= (help)