Observation 106264: Amanita sect. Phalloideae (Fr.) Singer
When: 2012-08-20
No herbarium specimen
0 Sequences

Proposed Names

28% (1)
Recognized by sight: Cap reaction light and fleeting in strong KOH. Large size…6" diameter cap, bulb 2 1/2 " dia. Volva thick and felty. Under pine.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Oh, that’s too bad.
By: R. E. Tulloss (ret)
2012-09-20 04:09:11 EEST (+0300)

I’m sorry it started to go on you like that.

They’ll be another one.

Thanks for your reply.


Sorry, no.
By: Eric Smith (esmith)
2012-09-20 02:28:18 EEST (+0300)

I brought the mature specimen home and it stank up my place so bad I chose to discard it. I still have a small piece of the cap but haven’t found the time (or my scope) to take a look. I lack a stage micrometer anyhow. I need better equipment…

By: R. E. Tulloss (ret)
2012-09-19 16:44:30 EEST (+0300)

Did you make any spore measurements on this collection?


There is/are something/somethings…
By: R. E. Tulloss (ret)
2012-08-22 03:40:35 EEST (+0300)

very like bisporigera, but not reactive to KOH. We had a surprise of running into such a specimen at NEMF this year and it followed me home.

Whether these entities are “unusual” specimens of bisporigera or are something distinct is unknown. I am just sending off a set of KOH+ and a second set of KOH- specimens to see if there is a detectible difference from a molecular point of view. I hope to hear back in the not too distant future. If you don’t hear from me by October, bug me.


Thanks Rod.
By: Eric Smith (esmith)
2012-08-22 03:19:42 EEST (+0300)

I’ll make some time as I’m quite curious to the identity of this entity.

A few notes: The volva which I described as “felty” and thick turned thinner while drying. I think a better description would be thickly membranous. The reddish stains I observed on the volva when I took the pics is absent now and the gills have turned yellowish on drying.

If the spores are ellipsoid,…
By: R. E. Tulloss (ret)
2012-08-21 07:02:11 EEST (+0300)

I think it could be elliptosperma.

Do you have time to report on the spores?


The partial veil
By: Eric Smith (esmith)
2012-08-21 05:55:12 EEST (+0300)

was thin a membranous. It was collapsed on the mature specimen and intact on the young one. White above and below. The base was pinched off without much taper. Same spot as ob

I think it’s the same whatever it is…

I have the material.

What can you say of the color, texture, and size of the partial veil?
By: R. E. Tulloss (ret)
2012-08-21 05:48:02 EEST (+0300)

Atkinson collected A. elliptosperma near Ithaca; so that species should be found in your area. It has an upstanding volva and weak or no reaction to KOH.

What was the bottom of the bulb like in your material?


Created: 2012-08-21 03:28:55 EEST (+0300)
Last modified: 2012-08-21 03:34:12 EEST (+0300)
Viewed: 109 times, last viewed: 2017-06-14 05:23:54 EEST (+0300)
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