Observation 95839: Amanita sect. Phalloideae (Fr.) Singer

When: 2012-05-30

Collection location: Myakka River State Park, Sarasota, Florida, USA [Click for map]

Who: Josh M.K. (suchen)

No specimen available

Sorry for the poor quality of the photos. This is the first time I have found a specimen like this in Florida. I am not at all sure what to call it. The closest thing I could think would be something in section Phalloideae, but…?

Proposed Names

27% (1)
Eye3 Eyes3
Recognized by sight: Persistent ring, saccate volva, non-appendiculate margin

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I think there is a limbate volva…see first picture.
By: R. E. Tulloss (ret)
2012-05-31 13:25:48 CEST (+0200)

I think that sect. Phalloideae is a good start because of the fairly clearly defined limbate volva. The size eliminates the small Florida species A. virosiformis (=A. tenuifolia).


5% or greater solution of potassium hydroxide (KOH) can sort out some of the remaining possibilities. Still there are a number of names proposed by Murrill that he applied to ellipsoid-spored taxa that we cannot sort out cleanly at the present time.

If the spores are subglobose to broadly ellipsoid, see Amanita bisporigera, which in the Spring ought to have plentiful two-spored basidia that look like they have rather large “rabbit ears.”

This old key may help a bit if you have a scope:


I’m sorry that it has not been moved to the new site. We have been overwhelmed with work and other things.

Very best,


any universal veil bits (warts) on the cap?
By: Debbie Viess (amanitarita)
2012-05-31 04:51:32 CEST (+0200)

with a bit of a bulb, maybe something in section validae?

By: Josh M.K. (suchen)
2012-05-31 04:46:46 CEST (+0200)

The mushroom was 5ish inches tall, with cap diameter 3.5ish inches. The stem base inside the sack was slightly swollen but not bulbous. The volval sack was shaped like a slightly less bulbous version of Amanita bisporigera.

Can you give us an idea of the dimensions?
By: R. E. Tulloss (ret)
2012-05-31 03:51:05 CEST (+0200)

And the shape of the bulb?


Created: 2012-05-30 23:50:17 CEST (+0200)
Last modified: 2012-05-30 23:50:22 CEST (+0200)
Viewed: 69 times, last viewed: 2017-06-13 08:20:44 CEST (+0200)
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