Observation 276773: Agaricus pilosporus Peck

When: 2017-05-15

Collection location: Wilkes-Barre, Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

Specimen available

Poking out just above ground level on a lawn with a few planted trees (don’t know the type).

Pale reddish brown staining slowly developing on cut context, not in stipe base.

According to Rick Kerrigan (see obs 131357), “One interesting feature of many sect. Chitonioides species including A. bernardi is cheilocystidia which can be long, flexuous, contorted, and sometimes have a mucronate apex. Not so, A. bitorquis and allies in sect. Bivelares.” A pilosporus is a species housed in section Chitonoides. I believe I may have found a few of the “long, flexuous” cheilocystidia (6th and 7th photos). But, I am not certain whether the long thin projections seen are cystidia, basidia, or basidioles.

Spores subglobose 4.5-5.5 × 3.5-4.5.

There are two different specimens seen in this observation, found growing about 20 feet apart.


Specimen on right not sectioned.
Specimen seen in photo directly above on right.

Proposed Names

58% (1)
Recognized by sight
Used references
Based on microscopic features

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Created: 2017-05-17 20:44:06 PDT (-0700)
Last modified: 2017-05-17 20:44:13 PDT (-0700)
Viewed: 21 times, last viewed: 2019-08-12 15:40:05 PDT (-0700)
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