Mushroom Observer
Catalog #: MUOB 365877
Taxon: Psathyrella pseudovernalis A.H. Sm.
Family: Psathyrellaceae
Collector: Dave W   MUOB 365877   
Date: 2019-05-07
Verbatim Date: 2019-5-7
Locality: United States, Pennsylvania, Luzerne
41.1646  -75.9602
Elevation: 222-666 meters (728-2184ft)
Description: Original observation #365877 (Mushroom Observer)
Occurrence Remarks: Hymenial cystidia tapered on the ends and swollen in the middle (fusoid-ventricose). First two micros come from smallest fruit body seen on the left in the thumbnail. Last two micros come from the larger fruit body seen in the thumbnail on the right. Note that the cystidium coming form the larger fruit body (last photo) is not as prominently tapered on the one end. The shape is similar to what is seen on Mushroom Expert for P. spadiceogrisea, which Kuo calls "utriform". So, I'm wondering about the distinction pseudovernalis vs. spadiceogrisea based upon shapes of hymenial cystidia. The three fruit bodies seen in this observation were growing together stuck to the same piece of wood within a 2-3 inches of each other. So, I doubt they represent other than a single taxon. Same general area as obs 365525 and obs 365524, the latter featuring capitate hymenial cystidia.
Specimen Images
Rights Holder: MO Observers
Record Id: 91f18b83-83c5-480e-bed8-4c9a10041ec8
For additional information on this occurrence, please contact: Nathan Wilson (
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