Chlorociboria aeruginascens
species of fungus
Chlorociboria aeruginascens is a saprobic species of mushroom, commonly known as the blue stain, green elfcup or the green wood cup because of its characteristic small, green, saucer-shaped fruit bodies. The actual fruit bodies are infrequently seen, with the fungus usually observed through the green staining of wood it causes.
Taxonomy
The specific epithet is derived from the Latin roots aerug- ("blue-green") and ascens ("becoming"). Some authors have used a variant spelling of the specific epithet, aeruginescens.
Description
This species has apothecia (cup-shaped ascocarps) that are usually attached laterally, often less than 0.5 centimetres (1⁄4 in) in diameter, collapsing laterally and becoming rolled inwards when dry. The outer tissue layer of the apothecium, known as the ectal excipulum, has a delicate tomentose surface composed of hair-like, straight or sometimes coiled, smooth hyphae. The stipe is typically less than 3 mm long, with a central or eccentric attachment to the apothecia. The spores are roughly spindle-shaped (fusiform), smooth, and 5–8 by 0.7–2.8 μm. The spore print is white. Apothecia grow on bark-free wood, especially oak, part of which at least is stained greenish by the mycelium.
This brief starts where responsible research should: with the source description of “Chlorociboria aeruginascens” as species of fungus. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as species of fungus. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated Nov 27, 2025. The linked authority identifier is Q1773888. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Chlorociboria aeruginascens” 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.