When: 2008-10-25

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

Who: Daniel B. Wheeler (Tuberale)

No specimen available

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.


Proposed Names

73% (3)
Used references: Aurora’s Mushrooms Demystified
55% (3)
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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= Observer’s choice
= Current consensus


Add Comment
Thanks, Davin!
By: Daniel B. Wheeler (Tuberale)
2008-10-25 23:32:04 EDT (-0400)

I was hoping someone would recognize this.