Observation 165262: Agaricus bernardi Quél.

When: 2014-05-14

Collection location: Arlington, Virginia, USA [Click for map]

Who: Willow Nero (wbnero)

No specimen available

I’ve never seen a grocery store mushroom stain red, so I had to post this. Based on the keys I looked at, few agaricus species stain red and have no NaOH (KOH) reaction. It also has a pretty enlarged base. Was growing in mulch in a flowerbed. Inrolled margin.


Found another specimen 5/28. Scalier than the first couple.
Found again 6/20.
Found again 6/20.

Proposed Names

58% (2)
Recognized by sight: Mycological Association of Washington members identified its distinct "briny"smell.
Based on chemical features: Does not stain with NaOH
55% (1)
Recognized by sight: red staining, beefy stature, inrolled margin

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= Observer’s choice
= Current consensus


Add Comment
Thanks, Christian!
By: Willow Nero (wbnero)
2014-05-26 05:20:50 PDT (-0700)

I didn’t realize so many agaricus in this country, especially the East Coast, are undescribed. :)

Created: 2014-05-15 05:42:16 PDT (-0700)
Last modified: 2016-09-02 23:59:24 PDT (-0700)
Viewed: 68 times, last viewed: 2019-07-13 02:19:38 PDT (-0700)
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