Observation 139731: Amanita Pers.
When: 2013-07-11

Notes: This one seems mysterious to me. I originally thought it was either flavoconia or flavorubens. So I cut through the bulb looking for staining. Brown interior stain supported flavorubens. But the spores are globose to subglobose. Looking at the cap margin, it appears to be vaguely striate. So these last two things may lead toward frostiana. But true staining on a panther type seems unlikely, and the basal structure of this specimen does not show the “rolled sock.”

Preserved for study.

Proposed Names

29% (1)
Eye3 Eyes3
Recognized by sight
29% (1)
Recognized by sight
Based on microscopic features: As pointed out within the comments, those spores seen in side view qualify as broadly ellipsoid.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Hello, Dave and Josh.
By: R. E. Tulloss (ret)
2013-07-13 15:30:40 PDT (-0700)

I have seen pink staining in the bulbs of flavoconia var. flavoconia and var. inquinata when there was no insect damage. It’s not common, but it happens.

If I restrict judgment on spore shape to those in lateral view, I’d say there are some broadly ellipsoid spores present in the image of spores.

Very best,


Good point.
By: Josh M.K. (suchen)
2013-07-13 13:54:05 PDT (-0700)

Per Dr. Tulloss’ site, Amanita flavoconia can infrequently have subglobose spores, but yours seem rather more globose with the occasional subglobose shape floating around. Interesting!

Josh, this does look like flavoconia.
By: Dave W (Dave W)
2013-07-13 12:43:14 PDT (-0700)

And the browning may be from insect damage. It does appear to be localized to the inner stipe where inects are likely to have tunneled. But the spores from this mushroom are not elliptical.

I have found Amanita
By: Josh M.K. (suchen)
2013-07-13 11:57:50 PDT (-0700)

which stained inside the stem from maggot damage. I’d say probably Amanita flavoconia.

Created: 2013-07-13 09:56:21 PDT (-0700)
Last modified: 2015-03-29 16:57:06 PDT (-0700)
Viewed: 56 times, last viewed: 2017-02-04 02:02:38 PST (-0800)
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