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The Shroomverse alien in a steamy rainforest valley in Sri Lanka after rain.

SPECIES ATLAS · GYMNOPILUS

Gymnopilus dilepis

Named by (Berk. & Broome) Singer, 1951

Psilocybin record: confirmed (several modern analyses)

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.

Berkeley and Broome published Agaricus dilepis in 1871 in the Journal of the Linnean Society, from a Sri Lankan collection (holotype K(M) 75157). Singer moved it to Gymnopilus in 1951 in Lilloa.

Named
(Berk. & Broome) Singer, 1951
First published as
Agaricus dilepis Berk. & Broome (1871)
Other names in the records
Agaricus dilepis Berk. & Broome, Flammula dilepis (Berk. & Broome) Sacc., Naucoria dilepis (Berk. & Broome) Cout.
Type specimen
Sri Lanka; holotype K(M) 75157 (Index Fungorum). (Index Fungorum record, Agaricus dilepis)
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. 2018

    Reported Whole genome of a specimen identified as G. dilepis (TENN071165, 'Gy. aeruginosus sensu L. R. Hesler') carries the psilocybin gene cluster

    Method: genome sequencing (no chemistry). Reynolds et al. 2018, Evolution Letters 2: 88-101 (full text, PMC6121855)

  2. 2022

    Confirmed Psilocybin, psilocin and baeocystin quantified in two fruiting bodies of one Malaysian collection; the authors say tryptamine data for this species had never been published

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

  3. 2022

    Confirmed Psilocybin measured in G. dilepis mycelium and fruiting-body parts in a biosynthesis study

    Method: UPLC. Yao et al. 2022, J. Fungi 8: 870 (abstract)

  4. 2024

    Reported The four core psilocybin genes recovered from the published G. dilepis genome

    Method: gene prediction from genome data. Bradshaw et al. 2024, PNAS 121: e2311245121 (full text, PMC10801892)

What the record doesn’t show: Only one wild collection has a published tryptamine profile, and the sequenced genome comes from a specimen also labelled G. aeruginosus sensu Hesler.

Records on file.

GBIF, the global biodiversity database, held 993 occurrence records under this name, 1 of them from Canada, when we checked on October 25, 2026. GBIF held one Canadian occurrence record on 25 October 2026. 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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