Observation 208233: Amanita sect. Amidella

When: 2015-06-29

Collection location: Moon Lake Park, Pennsylvania, USA [Click for map]

Who: Dave W (Dave W)

No specimen available

Looks like an Amanita sect. Amidella, except I could find no evidence of a volva. Maybe they were tightly buried>

Withing for spore drop.

Proposed Names

29% (1)
Recognized by sight
56% (1)
Recognized by sight
61% (2)
Eye3 Eyes3
Based on microscopic features
Based on chemical features: Spores amyloid

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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And the results are in…
By: Dave W (Dave W)
2015-06-30 18:30:44 PDT (-0700)

Looks like Amidella. Spores amyloid, ellipsoid to elongate, with some verging on cylindrical.

The volval sac must have been buried, which is not unusual for some of these types. The ground was kinda solid in the spot, and I saw no evidence of the volvas. I suppose another possibility is that recently heavy rainfall may have cause the sacs to erode and wash away. Kind of intriguing, cuz I looked for the volvas.

I’ll cast a vote for section Amidella.
By: R. E. Tulloss (ret)
2015-06-30 06:23:14 PDT (-0700)


By: I. G. Safonov (IGSafonov)
2015-06-30 05:31:42 PDT (-0700)

I guess we all expect them to be amyloid. :-)

I have a good print.
By: Dave W (Dave W)
2015-06-30 05:18:30 PDT (-0700)

later today I’ll look at the spores.

See notes for answers.
By: Dave W (Dave W)
2015-06-29 21:52:32 PDT (-0700)

The possibility that the stipe broke away from a volval sac is difficult to not consider. Looks like an Amidella.

By: I. G. Safonov (IGSafonov)
2015-06-29 21:39:45 PDT (-0700)

Did you break off the stipe at root? Was there any evidence for a volval sack? The appendiculate cap margin eliminates sect. Vaginatae/Caesareae.

Created: 2015-06-29 21:33:33 PDT (-0700)
Last modified: 2015-06-30 20:03:39 PDT (-0700)
Viewed: 56 times, last viewed: 2017-06-20 05:44:33 PDT (-0700)
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