Observation 119566: Amanita sect. Caesareae Singer
When: 2012-08-21
No herbarium specimen
0 Sequences

Proposed Names

29% (1)
Recognized by sight
60% (2)
Recognized by sight
3% (2)
Recognized by sight: Cap color seems a bit light for spreta.
28% (1)
Used references: Amanita website. MO observations.
27% (1)
Used references: www.amanitaceae.org?Amanita+sp-QUE01

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I searched for any or all of the following words “pink” “rose” “salmon” “orange”
By: R. E. Tulloss (ret)
2012-12-11 16:18:27 CST (-0500)

in the “technical lamellae” data field of the WAO site and got 93 cases of the presence of at least one of those words in the descriptions of an Amanita or Limacella.


Pink gills are present in several sections in the genus Amanita.
By: R. E. Tulloss (ret)
2012-12-11 14:35:34 CST (-0500)

Sometimes they are a constant character, and sometimes they are not.

For example, not all specimens of A. ristichii and A. roseolamellata have pink gills. The latter, on the other hand, has gills that very often will be strongly “orange-white” or “pale salmon” or “pink” after drying.

In a few lepidellas in Mediterranean Europe, there is some evidence that there is a foreign element (disease, parasite) that causes gills to turn pinkish or pinkish brown in some species of Amanita subsection Solitaria.

Roughly speaking the group of Caesareae with sometimes (or always) pinkish gills that Santiago mentions includes species from eastern Asia and eastern North America. At present, none of them are known from western North America.


that is a horse of a different color!
By: Debbie Viess (amanitarita)
2012-12-11 12:42:28 CST (-0500)

I too can see a hint of pink in those gills, but is that color strictly phylogenetic? We have found lepidellas with pinking gills here in California.

There may well be a correlation between those eastern pinking gilled casesarea, none of which we see here in the west. But like Dave, I have collected banningiana and reacted to your statement at face value.

I agree with David…
By: R. E. Tulloss (ret)
2012-12-11 12:38:29 CST (-0500)

about the probability of this being A. banningiana. Another difference is that the volval sac is proportionately smaller in banningiana (not enclosing very much of the stem).

Unfortunately, we have very little knowledge of the macroscopic morphology of “sp.-QUE01”. For example, we don’t know whether to expect pinkish gills or not. I don’t believe there is a known image of “sp-QUE-01” either.

Very best,


Replay to Dave on: “This does not look like A. banningiana to me.”
By: Santiago Sanchez (santiagosnchez)
2012-12-11 12:26:26 CST (-0500)

Hi Dave,

Although this is unpublished, A. banningiana is related phylogenetically to species in sect. Caesareae that have pinkish gills (e.g. A. ristichii, A. incarnatifolia, A. longistriata, A. sp-53, A. roseolamellata). To me is seams that the gills in this specimen are somewhat pinkish. It wouldn’t surprise me that they would all be related.

On the other hand, A. spreta is phylogenetically related to other species with relatively dense brownish pigments on the cap (e.g. A. yuaniana, A. recutita s. Coker, A. belizeana, A. esculenta).


oh so not banningiana.
By: Debbie Viess (amanitarita)
2012-12-11 11:18:08 CST (-0500)

but it is a curious amanita nonetheless.

This does not look like A. banningiana to me.
By: Dave W (Dave W)
2012-12-11 07:56:57 CST (-0500)

Banningiana (at least the ones I commonly find here in PA, USA) show more brownish-orange on the cap, with a brownish disc a common trait. Also, banningiana usually shows at least a little yellow on the stipe and/or gills.

I know the
By: Eva Skific (Evica)
2012-12-10 18:27:57 CST (-0500)
general area where I found the Amanita

With any luck, it might happen again.

I’m surprised that in my area
There are so many experts …

We are definitively interested!
By: Santiago Sanchez (santiagosnchez)
2012-12-10 17:59:45 CST (-0500)

Hi people.

We could easily barcode this specimen if some tissue is provided.

It pretty unlikely that this species is very different from either Rod’s Amanita “sp-QUE01” or (to me it also suggests) A. banningiana.

Eva: this is my email (santiago.snchez@gmail.com) if you would like to contact me for further investigation.

There will have be an expedition mounted to go search for this creature. [edited]
By: R. E. Tulloss (ret)
2012-12-10 17:13:05 CST (-0500)

I am quite sure that Santiago Sanchez (in Jean-Marc Moncalvo’s lab, Dept. of Natural History, Royal Ontario Museum, Toronto) will want to find this with your assistance. He is working very hard on section Caesareae.


no dry material
By: Eva Skific (Evica)
2012-12-10 16:57:23 CST (-0500)


only 2 more photos

The volval sac is a bit large for A. spreta, and I’ve never seen yellow…
By: R. E. Tulloss (ret)
2012-12-10 16:47:33 CST (-0500)

on a spreta.

I think we could back off on spreta as the most likely probability.

Very best,


Good suggestions, David……[editted]
By: R. E. Tulloss (ret)
2012-12-10 16:43:16 CST (-0500)

I have seen young spreta (confirmed morphologically and by DNA) that were about as pure white as I could imagine).

Seems to me there might be another possibility…(I’m going away to look it up)…I’m back: Amanita “sp-QUE01”, which is listed with a small amount of information here:

http://www.amanitaceae.org?Amanita sp-QUE01

Notice that we (just) now have DNA for all three of the possibilities (although, at present in GenBank, the sequences were for some reason edited to remove one base in the midst of the sequence. The sequences will soon be resubmitted to correct GenBank. At any rate, we can figure out if Evica’s mushroom is one of the three possibilities put forward (or NOT) if she has dried and retained it.

Very best,


Created: 2012-12-10 14:22:19 CST (-0500)
Last modified: 2012-12-10 18:36:23 CST (-0500)
Viewed: 115 times, last viewed: 2017-08-05 17:55:54 CDT (-0400)
Show Log