Observation 13099: Agaricus californicus Peck

When: 2008-10-25

Collection location: Southeast Portland, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

Notes:
Found in a neighbor’s parking strip (grassy) and adjacent flower bed. Base of stipe stains yellow immediately on picking. Odor rather pleasant, not phenolic at all in my opinion. But in Aurora’s key, there are only two options to a yellow-staining base of the stipe Agaricus: A. xanthodermus and X. praeclaresquamosus (p. 331). OTOH, Aurora also states that A. xanthodermus stains yellowish especially on the margin of the cap, and this doesn’t stain yellowish in the margin at all: just the base of the stipe. Wishing to be safe, I will not consume this rather attractive (and with a very appealing odor to me) mushroom.

Images

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Proposed Names

64% (2)
Eye3
Used references: Aurora’s Mushrooms Demystified
91% (2)
Eyes3
Recognized by sight: Weak yellow staining in the base of the stipe and none to very weak staining on the rest of the fruiting body. Try the key by Fred Stevens http://mykoweb.com/misc/Agaricus_key.pdf

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

Add Comment
Thanks, Davin!
By: Daniel B. Wheeler (Tuberale)
2008-10-25 20:32:04 MST (-0700)

I was hoping someone would recognize this.

Created: 2008-10-25 18:54:06 MST (-0700)
Last modified: 2011-10-24 12:13:02 MST (-0700)
Viewed: 156 times, last viewed: 2018-08-03 15:57:19 MST (-0700)