Tricholoma saponaceum

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Tricholoma saponaceum
Tricholoma saponaceum.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. saponaceum
Binomial name
Tricholoma saponaceum
(Fr.) P.Kumm. (1871)
Synonyms
  • Agaricus saponaceusFr. (1818)
  • Tricholoma atrovirens(Pers.) Sacc. (1887)
Tricholoma saponaceum
Information icon.svg
Gills icon.png Gills on hymenium
Convex cap icon.svg Cap is convex
Adnexed gills icon2.svg Hymenium is adnexed
Bare stipe icon.svg Stipe is bare
Transparent spore print icon.svg
Spore print is white
Mycorrhizal fungus.svgEcology is mycorrhizal
Mycomorphbox Poison.pngEdibility is poisonous

Tricholoma saponaceum, also known as the soap-scented toadstool, soapy tricholoma, [1] soapy knight or soap tricholoma is an inedible mushroom found in woodlands in Europe and North America.

Contents

Taxonomy

Tricholoma saponaceum was first described in 1818 by the father of mycology Elias Magnus Fries and given the name Agaricus saponaceus, before being placed in the genus Tricholoma by German mycologist Paul Kummer in 1871. The specific epithet saponaceum is derived from the Latin 'of or pertaining to soap'. [2] Its names in other European languages, such as French Tricolome à odeur de savon, and German Seifenritterling have a similar derivation to its English names-soap-scented toadstool, soapy knight or soap tricholoma—all relating to its soapy scent. [3] [4]

Tricholoma saponaceum is yet another fungus which may represent a species complex of two or more species. The variety ardosiacum, described by Italian mycologist Giacomo Bresadola, has a dark blue-grey cap.

Description

Tricholoma saponaceum has a convex cap about 4–15 cm (1.6–5.9 in) across, with a vague umbo [5] which flattens with age. The colour is highly variable, with greyish, greenish, olive, yellowish and brownish shades reported. The cap is paler at the margin and fades with age. The widely spaced gills are adnexed and whitish, although may be tinted pale green and bruise pink. The whitish stipe (also sometimes displaying colors present in the cap) lacks a ring and can be swollen in its midriff, and measures 4–12 cm (1.6–4.7 in) tall by 1–3 cm (0.4–1.2 in) wide. [5] The flesh can but does not always stain pink-orange, and this color may already be present in the flesh of the stipe's base. [6] The spore print is white, and the oval smooth spores measure 5–6 × 3–4  μm. [3] The odour is distinctive and has been likened to newly scrubbed floors or soap. [4]

Its gills may lead it to being confused with Hygrophorus species. [3] It is similar in appearance to Tricholoma griseoviolaceum . [5]

Distribution and habitat

Tricholoma saponaceum is a terrestrial mushroom found in Europe and North America. It is abundant in the Pacific Northwest and Rocky Mountains. [3] It is found in coniferous and deciduous woodlands (more commonly the former in North America) from late summer to late autumn. Spruce, live oak, tanoak, and madrone are species it can be associated with in the western United States. [3] It is associated with oak in Central and southern Europe. [4]

Toxicity

Bland or mild tasting, the fungus is usually classified as inedible or poisonous in guidebooks. [3] [4] [7] It contains toxins which can cause severe gastric upset. [8]

See also

Related Research Articles

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<i>Hortiboletus rubellus</i> Species of fungus

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<i>Russula brevipes</i> Species of fungus

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<i>Floccularia albolanaripes</i> Species of fungus

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References

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  2. Simpson DP (1979). Cassell's Latin Dictionary (5 ed.). London: Cassell Ltd. p. 883. ISBN   0-304-52257-0.
  3. 1 2 3 4 5 6 Arora, David (1986). Mushrooms demystified: a comprehensive guide to the fleshy fungi (2nd ed.). Berkeley: Ten Speed Press. p.  184. ISBN   0-89815-169-4.
  4. 1 2 3 4 Nilson, Sven; Olle Persson (1977). Fungi of Northern Europe 2: Gill-Fungi. Penguin. p. 30. ISBN   0-14-063006-6.
  5. 1 2 3 Davis, R. Michael; Sommer, Robert; Menge, John A. (2012). Field Guide to Mushrooms of Western North America. Berkeley: University of California Press. pp. 166–167. ISBN   978-0-520-95360-4. OCLC   797915861.
  6. Trudell, Steve; Ammirati, Joe (2009). Mushrooms of the Pacific Northwest. Timber Press Field Guides. Portland, OR: Timber Press. p. 106. ISBN   978-0-88192-935-5.
  7. Phillips, Roger (2010). Mushrooms and Other Fungi of North America. Buffalo, NY: Firefly Books. p. 50. ISBN   978-1-55407-651-2.
  8. Miller Jr., Orson K.; Miller, Hope H. (2006). North American Mushrooms: A Field Guide to Edible and Inedible Fungi. Guilford, CN: FalconGuide. p. 124. ISBN   978-0-7627-3109-1.