Observation 188217: Agaricus californicus Peck
When: 2014-11-06
No herbarium specimen

Notes: Fruiting in grass, yellow staining base when handled, squared cap apex(darkening tan).

Odor: phenolic, unpleasant. NOT of almonds in the slightest.

Elevation: 1500ft.

Temp: low 40’s.

Proposed Names

28% (1)
Recognized by sight
64% (2)
Eye3 Eyes3
Recognized by sight: I’m trying to feel the difference between the species… was there no cap staining?

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Cap staining-
By: Drew Henderson (Hendre17)
2014-11-13 08:18:52 PST (-0800)

No cap staining on these, which made me hesitate for a few minutes. I am not that familiar with A. californicus but after going back to good old Arora and an excellent PNW author Steve Trudell I feel that you are most likely right with your suggestion. The wrinkled brown cap(especially in older specimens), stout stem(compared to most Z.xanthodermus). I will have to look a bit more closely at our local Agaricus this coming season. Most collections we come across here are usually A. xanthodermus when we’re looking for the edible A. campestris. I have, however, also collected multiple flushes of A. bitorquis, A. campestris, and the red staining A. bernardii all in this same location.

Created: 2014-11-13 07:49:07 PST (-0800)
Last modified: 2014-11-13 08:19:25 PST (-0800)
Viewed: 34 times, last viewed: 2016-10-22 23:24:19 PDT (-0700)
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