Observation 140065: Amanita virginiana (Murrill) Murrill

When: 2013-07-13

Collection location: Pikes Creek Reservoir, Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

No specimen available

Unfortunately, these were water-soaked and falling apart. So I did not make a collection.

Although small, this caesar is distinctive… except that it is similar to A. virginiana :-) On a path in mixed woods, oak the dominant tree type.

Proposed Names

29% (1)
Recognized by sight
61% (2)
Eye3 Eyes3
Used references: See comments.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
For those interested in more details…
By: R. E. Tulloss (ret)
2013-07-16 09:13:13 MST (-0700)
You’re welcome, David.
By: R. E. Tulloss (ret)
2013-07-16 09:11:19 MST (-0700)

If you do find more of the “little caesars,” I think it would be very useful to get samples for DNA extraction to Santiago Sanchez. I can take care of that as usual. I’m pretty sure that the Moncalvo lab never was able to extract DNA from any of my pachysperma samples. So anything in the “little caesars” group would be very helpful to their efforts.

Very best,


The learning curve here at MO…
By: Dave W (Dave W)
2013-07-16 07:06:12 MST (-0700)

is quite steep. One learns new species names through a combination of wandering around through the woods collecting/photographing, and then sometimes enjoying the benefit of interaction with an expert.

The volval sac on these was indeed reminiscent of an “exploded piece of popcorn.” I have one more photo… a closeup of the detached sac. I’ll post it later.

Maybe I can find another one or two of these.

Thanks Rod.

The brown cap center suggests that A. virginiana is another…
By: R. E. Tulloss (ret)
2013-07-16 06:26:21 MST (-0700)



Created: 2013-07-15 21:39:55 MST (-0700)
Last modified: 2013-07-19 06:08:04 MST (-0700)
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