shroomverse
The Shroomverse alien on a steep green slope above sea cliffs in the Faroe Islands.

SPECIES ATLAS · PANAEOLUS

Panaeolus olivaceus

Named by F.H. Møller, 1945

Psilocybin record: not detected (one modern analysis)

A history of a name and a chemistry record, not an identification guide. No name, picture or description can show that a wild mushroom is safe, and poisonous mushrooms are mistaken for magic mushrooms. If someone may have eaten a wild mushroom, call a poison centre without waiting for symptoms: 1-844-POISON-X in most of Canada, 1-800-463-5060 in Quebec. Call 911 if they’re unconscious, not breathing or having a seizure.

How it was named.

F.H. Møller described Panaeolus olivaceus in 1945 in Fungi of the Faeröes, part I: 171. Index Fungorum accepts the name; GBIF also lists it as a variety of P. fimicola.

Named
F.H. Møller, 1945
Other names in the records
Panaeolus fimicola var. olivaceus (F.H. Møller) (per GBIF)
Type specimen
Faroe Islands (Index Fungorum: Føroyar). (Index Fungorum record, Panaeolus olivaceus; pin = Wikidata coordinates (Q4628))
The pin marks the type locality at the level of detail the record gives: one historical collection, not a range or a place to look. Land outlines: Natural Earth.

The psilocybin record.

Every analysis we could verify, oldest first, including results that found nothing. No amounts are given: they vary between collections and this is not a potency guide.

  1. 2022

    Not detected No psilocybin, psilocin, baeocystin or norbaeocystin in two fruiting bodies from one collection

    Method: UHPLC-MS/MS. Gotvaldová et al. 2022, Int. J. Mol. Sci. 23: 14068 (full text PMC9693126)

What the record doesn’t show: One negative analysis of a single collection; no positive report was found in the sources read.

Records on file.

GBIF, the global biodiversity database, held 1,060 occurrence records under this name, 21 of them from Canada, when we checked on October 25, 2026. GBIF lists 21 occurrence records from Canada under this name (checked 2026-10-25); the records are not verified identifications. Records include unverified observations and old misidentifications, so counts show where people have recorded the name, not where it grows.

See the name on GBIF

Sources

Compiled from the sources above; last checked .

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