Observation 98322: Agaricus L.

When: 2012-06-25

Collection location: Shorecrest High School, Shoreline, King Co., Washington, USA [Click for map]

Who: Tim Sage (NMNR)

No specimen available

Species Lists


Proposed Names

57% (1)
Recognized by sight
-30% (2)
Used references: La chair est de couleur blanche, rosit parfois légèrement à la coupe et est de tendance jaunissante vers la base du pied. ON: http://mycorance.free.fr/valchamp/champi519.htm.

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= Observer’s choice
= Current consensus


Add Comment
By: Tim Sage (NMNR)
2012-06-27 10:01:53 PDT (-0700)

I thought I listed the trees.

Douglas fir was closest, Western Red cedar pretty close as well. Growing in grass, all by itself. Across a street/driveway are a couple oaks.

Agaricus are saprotrophic
By: Alan Rockefeller (Alan Rockefeller)
2012-06-27 09:23:07 PDT (-0700)

but they are very picky about what they eat, so trees do matter a lot with this genus.

Do trees matter?
By: Irene Andersson (irenea)
2012-06-26 23:51:15 PDT (-0700)

I thought Agaricus were saprobes and not so particular about trees.

I see no mention of any tree species, Tim.
By: Daniel B. Wheeler (Tuberale)
2012-06-26 22:09:34 PDT (-0700)

Checked twice. Maybe you had another obs. with trees?

By: Tim Sage (NMNR)
2012-06-26 18:07:49 PDT (-0700)

Nope just the aforementioned species. There is an oak across a driveway as well.

By chance with
By: Daniel B. Wheeler (Tuberale)
2012-06-26 17:59:30 PDT (-0700)

pine or cypress nearby? If so, A. benezei possible too, although I’ve never seen it before. Said to be from Texas. But Oregon has Monterey cypress and lots of Pinus contorta, that could be in the Shoreline area as well…

now THAT’S a reddening agaricus! ;)
By: Debbie Viess (amanitarita)
2012-06-26 12:32:13 PDT (-0700)
By: Christian (Christian Schwarz)
2012-06-26 10:56:07 PDT (-0700)

Spore size and presence/absence/shape of cheilocystidia will help here.

Created: 2012-06-25 20:37:45 PDT (-0700)
Last modified: 2014-07-31 14:07:42 PDT (-0700)
Viewed: 171 times, last viewed: 2019-02-25 03:46:06 PST (-0800)
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