Amanita spreta
species of Agaricomycetes
Amanita spreta or the hated amanita is a species of mushroom in the genus Amanita.
Description
A. spreta is usually distinguished by its grayish brown cap with dark, radial streaks; its medium to large size, the presence of a ring on the upper stem, and its stem base, in which it features a white, sacklike volva and is not prominently swollen. Its ellipsoid, inamyloid spores also help to distinguish it.
Cap
The cap measures around 5.8–15.4 centimetres (2+1⁄4–6 inches) wide, with whitish or pallid tints of gray and/or brown at first, often darkening to gray-brown or brown-gray, often darkest in the center, often white or nearly white at the margin, having minute colorless spots and/or giving the impression of densely placed radial fibers embedded in the cap skin. In addition, the cap is broadly campanulate to plano-convex, and eventually has a large umbo in a slight depression. The cap is viscid to tacky and dull to shiny to subshiny with drying, and it has a decurved, short-striate margin. The volva is either absent or present as white to pale gray, scant, irregular patches, soft to smooth, easily removable, and membranous. The flesh is white, pale brown under the cap skin in the center, is 8–17 millimetres (1⁄2–1⁄2 in) thick over the stem, and is thinning evenly nearing the margin.
Gills
The gills are free, receding at maturity, very crowded to crowded, pale cream to cream to white, 8–19 mm broad, broadest at the midpoint, anastomosing, with faint and short decurrent lines on the top of the stem, and with a minutely powdery edge. The short gills are truncate to rounded truncate to subtruncate, unevenly distributed, of diverse lengths, and plentiful (sometimes more plentiful than full-length gills).
This brief starts where responsible research should: with the source description of “Amanita spreta” as species of Agaricomycetes. 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 Agaricomycetes. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Aug 18, 2026. The linked authority identifier is Q28403802. None of the 0 selected statements returned an explicit reference.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Amanita spreta”, its source revision and the description used here.
- Expand the search: follow Amanita spreta primary sources, Amanita spreta archive and Amanita research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
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This entry incorporates text from “Amanita spreta” 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.