Observation 136811: Agaricus auricolor L. Krieg

When: 2013-06-10

Collection location: Big Thicket, Polk Co., Texas, USA [Click for map]

Who: Ron Pastorino (Ronpast)

Specimen available

Growing on the ground in the Big Sandy Creek Unit.
Caps up to 3 cm across.
Spore print deep purple.
Spores ~ 4.3-5.0 X 3.7-4.0 microns, smooth.
Have seen these before but only older specimens. They are much more impressive when young and the yellow scales dominate.
Spore color seems unusual for an Agaricus but spore shape is more typical.

Proposed Names

47% (2)
Eye3 Eyes3
Recognized by sight
Used references: Agaricus of North America by R. Kerrigan. Tapering stem seems to indicate these are close to what Krieg described.
45% (2)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Many of the Obs.
By: walt sturgeon (Mycowalt)
2013-07-30 23:22:52 AEST (+1000)

are of other Agaricus species with yellow colors or stains. I don’t know how uncommon A. auricolor is.
There are some probable pics on MO.
See: http://mushroomobserver.org/136316

Then are you saying all the Agaricus auricolor on MO are something else
By: Ron Pastorino (Ronpast)
2013-07-30 12:30:45 AEST (+1000)

to be named later?…and A. auricolor is very rare??

It’s still out there
By: walt sturgeon (Mycowalt)
2013-07-30 11:17:17 AEST (+1000)

I got a sneak peek at the upcoming monograph and spoke with the author.

So why has Agaricus auricolor been exiled
By: Ron Pastorino (Ronpast)
2013-07-30 10:49:22 AEST (+1000)

to the trash bin?

Created: 2013-06-19 06:31:29 AEST (+1000)
Last modified: 2017-06-06 10:24:33 AEST (+1000)
Viewed: 108 times, last viewed: 2017-11-07 07:18:37 AEDT (+1100)
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