Coprinus dunarum
An inky cap named for sand dunes, described by Stoll. A 2015 DNA study cited by Wikipedia treats it as a synonym of Coprinopsis acuminata, so the name has little independent standing; there are no usable GBIF records.
Where it grows wild
The name points to coastal sand dunes; published ecology was not reachable. Dune inky caps fruit on sand enriched with buried plant debris among dune grasses.
Coastal dunes, near sea level.
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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app.