Calonarius oliveopetasatus

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Calonarius oliveopetasatus
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Cortinariaceae
Genus: Calonarius
Species:
C. oliveopetasatus
Binomial name
Calonarius oliveopetasatus
(M.M. Moser) Niskanen & Liimat.
Synonyms

Cortinarius oliveopetasatusM.M. Moser

Calonarius oliveopetasatus
Mycological characteristics
Gills icon.png Gills on hymenium
Convex cap icon.svg Cap is convex
Emarginate gills icon2.svg Hymenium is emarginate
Cortina stipe icon.png Stipe has a cortina
Transparent spore print icon.svg
 Spore print is reddish-brown
Mycorrhizal fungus.svgEcology is mycorrhizal
Mycomorphbox Question.pngEdibility is unknown

Calonarius oliveopetasatus, formerly known as Cortinarius oliveopetasatus, [1] is a species of mushroom in the family Cortinariaceae. It is rare. [2]

Contents

Description

The cap of Calonarius oliveopetasatus starts out dark green, before becoming olive brown as the mushroom gets older. It starts out round or convex and becomes convex or flat. [2] The gills start out buff in color and become yellowish and eventually rusty brown. [3] The stipe is about 5.5-10 centimeters long and 1–2.5 centimeters wide. It has a bulbous base that is about 2.5-4.5 centimeters wide. The stipe is yellowish to brownish. [4] A cortina is present and the spore print is rusty brown. [2] The spores can be almond-shaped or lemon shaped, and there are four spores per basidium. Cheliocystidia are absent, but clamp connections are present. [4] When potassium hydroxide is applied, the cap of the mushroom turns orangish brown and the stipe turns dark brown. [3]

Habitat and ecology

Calonarius oliveopetasatus grows under conifers such as douglas fir. It is found on the Olympic Peninsula and in the Cascades, where it grows in old-growth forests. [2]

References

  1. ↑ "Index Fungorum - Names Record". www.indexfungorum.org. Retrieved 2025-11-11.
  2. 1 2 3 4 Siegel, Noah; Schwarz, Christian (September 1, 2024). Mushrooms of Cascadia: A Comprehensive Guide to Fungi of the Pacific Northwest. Humboldt County, CA: Backcountry Press. p. 202. ISBN   9781941624197.
  3. 1 2 Adams, Shannon (September 7, 2020). "Cortinarius oliveopetasatus". North American Cortinarius Collections. Archived from the original on June 6, 2023. Retrieved 2025-11-11.
  4. 1 2 Gibson, Ian. "Cortinarius oliveopetasatus". E-Flora BC: Electronic Atlas of the Flora of British Colombia.


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