iNaturalist Research Grade Observations
Catalog #: 4737225
Taxon: Psilocybe yungensis Singer & A.H. Sm.
Family: Hymenogastraceae
Collector: alan_rockefeller      
Date: 2011-08-10
Verbatim Date: 2011-08-10
Locality: Mexico, Jalisco, Mexico
20.872219  -103.933967 +-279169m.
Description: Original observation #4737225 (iNaturalist)
Occurrence Remarks:

These were found on the same log as observation 54326.

This is the first time I have seen these since 2008, perhaps because in 2009 and 2010 I visited this site much later in the season.

Most of the specimens were growing from logs, something I have never seen with P. zapotecorum. Three mushrooms were growing from dirt on a landslide slope nearby.

Blue micrographs stained with methylene blue. When the scale is visible, the divisions are one micrometer.

Specimen Images
Rights Holder: © held by the observer (listed as 'Collector') at, with some rights reserved (CC BY-SA)
Record Id: c4cbf9c1-d57a-451d-82b6-28b25fbb545b
Occurrence ID (GUID):
For additional information on this occurrence, please contact: Ken-ichi Ueda (
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