Observation 188217: Agaricus californicus Peck

When: 2014-11-06

Collection location: Sportsman State Park, Yakima, Washington, USA [Click for map]

Who: Drew Henderson (Hendre17)

No specimen available

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

29% (1)
Recognized by sight
63% (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 17:18:52 CET (+0100)

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 16:49:07 CET (+0100)
Last modified: 2014-11-13 17:19:25 CET (+0100)
Viewed: 40 times, last viewed: 2017-10-04 00:21:35 CEST (+0200)
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