Observation 110435: Amanita “sp-MO03” T

Cap – 30 cm
Stem 5.5 cm x 6-7 mm

Stipe with a bit of pinkish upon handling. becoming brownish, almost dark goldish. Yellow material present above partial veil in snakeskin pattern.

Partial veil becoming brown.

Odor not distinctive.

Proposed Names

-28% (1)
Recognized by sight
-30% (2)
Recognized by sight: Fro my experience, the caps can turn a bronze color sometimes; apparently from environmental conditions.
-54% (1)
Based on chemical features: Based on nrITS and nrLSU sequences courtesy of Dr. Karen Hughes, Univ. of Tenn., Knoxville
82% (1)
Based on chemical features: See discussion on observation 135943. This taxon was discovered through its DNA and identified by its nrLSU gene sequence.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Stephen Russell (Mycota)
2015-05-30 03:07:34 CEST (+0200)

The forest is primarily oak where that was found. South facing hillside.

Can I take it (from leaves in the images) that…
By: R. E. Tulloss (ret)
2015-05-30 02:17:56 CEST (+0200)

the habitat was deciduous woods including oak?

Very best,


Thanks, Stephen.
By: R. E. Tulloss (ret)
2015-05-28 17:14:55 CEST (+0200)

This little critter turned out to be quite interesting.

Very best,


With more genetic data coming in,…
By: R. E. Tulloss (ret)
2015-05-28 16:59:51 CEST (+0200)

We’ve found that this species has an nrLSU gene identical to that of the species of MO observation 135947. I thought that was interesting since MO users can match up the two sets of images. The species is not “sp-36.” We’ll have to give it a code of its own.

Very best,


The material has now been sequenced…and produced a surprise. EDIT EDIT
By: R. E. Tulloss (ret)
2013-08-11 22:22:06 CEST (+0200)

As you probably know, the Roosevelt group is working with Dr. Karen Hughes on some related projects on amanitas of section Validae. As part of those activities a sample from your material was sent to Dr. Hughes as a potential representative of Amanita “sp-N47”. We got a surprise.

First of all, the only collection we have of “sp-N47” turns out to be the original one. The website will be changing to reflect this fact. The little, brown, rubescent mushroom illustrated here


is the beast itself and seems more related to European rubescent taxa (at present) than to other North American ones. The other collections supposedly of “sp-N47” may represent more than one additional species. Lovely. Your collection is very close to, if not a part of, the provisional entity called Amanita “sp-36”, which was called “franchetii” in Dr. Jenkins’ 1986 book on North American amanitas. It has often been referred to A. flavorubens; however, it is generally smaller and (EDIT) has smaller spores. A sporograph illustrating this difference has been added to the technical tab on this page:


So, Stephen, your collections played a postive role in helping us sort through a compound mistake that I been have making worse in recent years. Now I can work on cleaning up my little mess. :) :(

Thanks very much for sharing this material with us.

Very best,


Material has been accessioned.
By: R. E. Tulloss (ret)
2013-05-24 21:21:52 CEST (+0200)

Thank you.


No, but
By: Stephen Russell (Mycota)
2012-09-20 19:34:21 CEST (+0200)

there was a bit of (presumably insect) damage directly in that location.

All the material of “sp-N47” ,,,
By: R. E. Tulloss (ret)
2012-09-20 13:14:25 CEST (+0200)

that I’ve seen (not that much) has had a little dimple in the center of the cap after it is expanded. Did you notice this?


By: R. E. Tulloss (ret)
2012-09-20 04:45:45 CEST (+0200)

It still may prove identifiable or, even if not, may be useful in studies on the complexity of the flavoconia group in North America.

Thanks for your efforts.

Very best,


Unfortunately I think the sample is sterile
By: Stephen Russell (Mycota)
2012-09-20 04:39:19 CEST (+0200)

Only found 2 spores with 3 gill samples. It will be dried and sent your way, however.

That might prove interesting.
By: R. E. Tulloss (ret)
2012-09-20 03:42:51 CEST (+0200)

Very best,


Ill work up some spores on it
By: Stephen Russell (Mycota)
2012-09-20 03:31:38 CEST (+0200)

Created: 2012-09-20 01:21:17 CEST (+0200)
Last modified: 2017-12-29 19:50:35 CET (+0100)
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