Rheubarbariboletus armeniacus
species of fungus
Rheubarbariboletus armeniacus is a small mushroom in the family Boletaceae native to Europe. It was formerly placed in the genera Boletus, Xerocomus, and Xerocomellus. It acquired its current name when it was transferred to genus Rheubarbariboletus in 2015.
Taxonomy
French naturalist Lucien Quélet described this species as Boletus armeniacus in 1885, before placing it in the genus Xerocomus in his 1888 work Flore mycologique de la France et des pays limitrophes (Mycological flora of France and neighbouring countries).
It was transferred to the new genus Xerocomellus described by Czech mycologist Josef Šutara in 2008, and then to Rheubarbariboletus in 2015.
Description
The cap is initially globular before expanding to become convex and flattening somewhat; it grows to a diameter of 2–6 cm (3⁄4–2+3⁄8 in). The cap margin initially adheres to the stipe and has a tendency to become lobed or undulated in age. The cap surface is first somewhat pubescent but later becomes smooth and hairless, and may develop cracks in age. Its color is orangish-apricot, aging to ochre. Tubes are initially pale yellow, but become more vivid in age, and eventually develop greenish-yellow to greenish-olive tones.
“Rheubarbariboletus armeniacus” enters the record as species of fungus. Crown Archives preserves that source wording while asking what Rheubarbariboletus, armeniacus and species can confirm, complicate or overturn.
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“Rheubarbariboletus armeniacus” is worth following because a concise public description often conceals a longer documentary argument. Here, Rheubarbariboletus, armeniacus and species provides the most credible route into that argument.
The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Oct 5, 2025. The linked authority identifier is Q54371403. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2015, 1885, 1888 and 2008.
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This entry incorporates text from “Rheubarbariboletus armeniacus” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.