Observation 74412: Psilocybe yungensis Singer & A.H. Sm
When: 2011-08-10
Collection location: Jalisco, Mexico [Click for map]
( 1408m)
Herbarium specimen reported

Notes: 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.

Species Lists

Images

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py1.jpg
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the collection
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the collection
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the collection
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pileipellis, pileus trama, lamellar trama 40x
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pileipellis, pileus trama, lamellar trama 100x
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pleurocystidia
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pleurocystidia
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pleurocystidia 400x
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cheilocystidia
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cheilocystidia
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cheilocystidia
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cheilocystidia
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an oddly shaped cell, maybe from the pileus trama
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An oddly shaped yellow thing
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cheilocystidia
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cheilocystidia
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cheilocystidia
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pleurocystidia
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pleurocystidia
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cheilocystidia
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spores 1000x
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spores 1000x
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spores 1000x
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Pleurocystidia
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Spores 1000x
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Specimen ready for microscopy
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Pleurocystidia
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Pleurocystidia
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Cheilocystidia
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Cheilocystidia
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Cheilocystidia
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Cheilocystidia 1000x
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Cheilocystidia 1000x
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habitat
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Proposed Names

-49% (2)
Recognized by sight: Flesh of the cap is much thinner than P. zapotecorum.
Based on microscopic features: Spores 5 – 6 × 4 – 6, subrhomboid, thick walled. Pleurocystidia present but not abundant. Cheilocystidia very abundant, forming a sterile band.
30% (2)
Recognized by sight

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
sweet.
By: Richard and Danielle Kneal (bloodworm)
2012-04-13 07:42:12 PDT (-0700)

thanks.
at least now i have a good reference point.

Yes
By: Alan Rockefeller (Alan Rockefeller)
2012-04-13 07:34:23 PDT (-0700)

It is macroscopically probably pretty close.

Alan…
By: Richard and Danielle Kneal (bloodworm)
2012-04-13 07:04:23 PDT (-0700)

i’ve been using this as a reference for Psilocybe mammillata.
do you think it might resemble these specimens?

Aunque por su habito lignicola probablemente sea P. yungensis
By: twoism
2011-09-29 13:58:51 PDT (-0700)

Remitirse al trabajo Gastón Guzmán, James Q. Jacobs, Florencia Ramírez-Guillén, Dulce Murrieta and Etelvina Gándara.2005. The Taxonomy of Psilocybe fagicola-complex.The Journal of Microbiology.

good match for the description in Stamets…
By: Debbie Viess (amanitarita)
2011-09-28 20:44:55 PDT (-0700)

were the wettest of the caps striate almost to the disk?

A lot of the features that you can see in your photos match the description of yungensis in Stamets’ Psilocybe book.

The range of yungensis apparently extends into Mexico. comments state that these mushrooms are distinctive in the way that they fruit: in great clusters from decomposing stumps. A cap that remains conic at maturity is another important feature, to help separate them out from the bluing pack.

How about
By: TimmiT
2011-09-28 20:06:57 PDT (-0700)

something like Psilocybe yungensis?

cool and unusual Psilocybe.
By: Debbie Viess (amanitarita)
2011-09-28 16:27:58 PDT (-0700)
It does look like that
By: Alan Rockefeller (Alan Rockefeller)
2011-08-26 19:28:53 PDT (-0700)

However the flesh on the cap is much thinner than it is in P. zapotecorum. Also, I have never found P. zapotecorum growing directly from a log. I scoped all of the mushrooms in the immediate area and they all had spores which were subrhomboid, very unlike P. zapotecorum. I have a lot more pictures and micrographs of these and will upload them when I get to a place with a fast internet connection.

P. zapotecorum?
By: A. Cortés-Pérez (Alonso)
2011-08-23 14:31:09 PDT (-0700)

The first picture is similar to P. zapotecorum.

Created: 2011-08-22 11:51:00 PDT (-0700)
Last modified: 2012-09-26 11:10:21 PDT (-0700)
Viewed: 687 times, last viewed: 2016-10-23 13:28:51 PDT (-0700)
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