iNaturalist Research Grade Observations
Catalog #: 14448641
Taxon: Agaricus bernardii Quél.
Family: Agaricaceae
Collector: pgwerner      
Date: 2014-03-20
Verbatim Date: 2014-03-20
Locality: United States, California, Newark, California, USA
37.521  -122.0305 +-6022m.
Georeference Remarks: GEODETIC_DATUM_ASSUMED_WGS84
Description: Original observation #14448641 (iNaturalist)
Occurrence Remarks:

Strong penetrating briny odor (that I at first mistook for phenolic).

White parts of surface and context brownish in 10% KOH. Staining purplish red, though not intensely so, when cut in half, and fading again after 15 minutes or so.

Lamellae pink becoming dull chocolate brown.

Found growing out of clay/gravel walkway

Specimen Images
Rights Holder: © held by the observer (listed as 'Collector') at, with some rights reserved (CC BY-SA)
Record Id: a56edb9f-5499-446d-b8d8-39981456197e
Occurrence ID (GUID):
For additional information on this occurrence, please contact: Ken-ichi Ueda (
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