Observation 4745: Amanita pseudobreckonii N. Siegel & C.F. Schwarz nom. prov.

When: 2007-11-05

Collection location: Tomales Bay State Park, Marin Co., California, USA [Click for map]

Who: Ron Pastorino (Ronpast)

Specimen available

Notes:
These 6 specimens were found in a small area and could be labeled Amanita gemmata.
They exhibit the lazy ring(“disiannulata”) characteristic but also most had no real distinct volva. I’m posting them to show the rather wide range of macro characteristics, especially the variation in the quantity and location of the universal veil remnants on both the cap and stem. Also the younger specimens showed no striations on the cap while the older ones were fairly distinct.
11-22-2010
I revisited this Observation to try to recheck spores ( and experiment with a new dye) and post photos.
The spores were ~ 9.6-12.0 X 8.6-10.0 microns with an average Q = 1.16
Some basidia is also shown.
These are clearly not Amanita breckonii but when I initially posted them, several people seemed to think that they appeared to match the description.
Dimitar also has done some work on them and lists them on his website as A. breckonii pretenders.

Images

7811
7812
122540
122541
122542

Proposed Names

39% (4)
Recognized by sight
-25% (5)
Used references: Suggested by others on site.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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looks like breckonii; very nice collection
By: Debbie Viess (amanitarita)
2008-03-31 20:44:44 EDT (-0400)

Striations on the caps edge in amanitas are a variable, not an absolute. It has to do with the thickness of the cap context, which is just one of many size variables that an individual mushroom can show (big small fat thin, etc.). I have even seen a normally always striate mushroom from section vaginata (calyptratoides, if you must know) with absolutely no striations.
Go figure.

Looks like A. breckonii
By: Nathan Wilson (nathan)
2007-11-05 23:55:44 EST (-0500)

Created: 2007-11-05 22:54:04 EST (-0500)
Last modified: 2015-01-28 16:57:47 EST (-0500)
Viewed: 358 times, last viewed: 2018-10-05 10:49:47 EDT (-0400)
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