Observation 7840: Stropharia hornemannii (Fr.) S. Lundell & Nannf.

When: 2007-10-10

Collection location: Wachusett Mountain State Reservation, Princeton, Massachusetts, USA [Click for map]

Who: Brian Seitzman

Specimen available

Pileus viscid, 7 cm., buff, brown in age w/olive tints at margin

Lamina edged white, faintly fringed

Stipe hollow

Proposed Names

90% (2)
Eye3 Eyes3
Recognized by sight: Growing on fallen wood. Scales, pileus, etc. matched descriptions.
Used references
Based on microscopic features: Cystidia consistent with written accounts. Spores black in deposit, ellipsoid, 12μ x 7μ
Based on chemical features: Identity confirmed by analysis of rDNA (large subunit and ITS).

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
DIfficult ID
By: Brian Seitzman
2008-06-11 22:50:25 CDT (-0400)

This was a difficult specimen to identify, which is why I did so in the end through molecular analysis. The sequences obtained were 100% identical to those deposited in GenBank for S. hornemannii.

Where is the annulus?
By: Darvin DeShazer (darv)
2008-06-11 22:43:50 CDT (-0400)

It looks more like Stropharia kauffmanii with the scruffy stipe instead of shaggy and the missing annulus.

Created: 2008-06-11 22:24:25 CDT (-0400)
Last modified: 2008-06-11 22:30:27 CDT (-0400)
Viewed: 33 times, last viewed: 2017-06-15 18:59:25 CDT (-0400)