Observation 139080: Amanita “sp-MO02”
When: 2013-07-08
(38.69° -90.715° )
No herbarium specimen

Notes: Found near the first overlook of the Clark Trail (Lewis & Clark Trail, Weldon Spring, Missouri)

Proposed Names

78% (2)
Eye3 Eyes3
Based on chemical features: Based on nrITS and nrLSU sequences derived from the dried specimen.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
web page started….
By: R. E. Tulloss (ret)
2014-03-24 14:40:49 CDT (-0400)

So that we have a placeholder on WAO for this apparently new species, I created this page:


Very best,


Yellow on partial veil in one photo and not in the other.
By: R. E. Tulloss (ret)
2014-03-24 14:38:32 CDT (-0400)

I think the yellow on the partial veil is a photo-artifact. Would you agree?

I have been trying to work on the spores of this species. Unfortunately, even near the stem (where amanita spores mature first), much of the hymenial surface is immature. So we need more material that has been induced to drop spores before it is dried. That way we also can confirm that the spore print color is white (of course, that’s very highly likely, but…).


That’s very neat!
By: Patrick Harvey (pg_harvey)
2014-03-23 12:04:35 CDT (-0400)

I’m glad to have found this for you. It’s exciting to have tentatively discovered something that doesn’t yet have a name.

— Patrick

That’s species “em oh zero two.”
By: R. E. Tulloss (ret)
2014-03-23 11:47:56 CDT (-0400)

Too cool to wait for a temporary name.


We ran some rough trees including the DNA from this material.
By: R. E. Tulloss (ret)
2014-03-23 11:41:04 CDT (-0400)

We were very interested to see that (in this primitive effort…emphasis) this material was outside the citrina-porphyria group in the Validae as would be expected; but in the remaining group (for which sequence data exists … emphasis), it falls in a small subgroup including the Asian sepiacea, the African congolensis, and the strange, very narrow-spored SE U.S. species A. radiata. This is a very cool find. I’m going to try to work up a little microscopic data and start a species page for this on WAO.

Very best,


This material has been sequenced.
By: R. E. Tulloss (ret)
2014-03-22 17:50:49 CDT (-0400)

The sequence is distant from all of the North American rubescent taxa. It is a species of section Validae; however, it is not something for which we have (as yet) a strongly similar LSU sequence.

I imagine we will have more input for your, Patrick in the future. This is a puzzle for the moment.

Very best,


Thanks Patrick,
By: groundhog
2013-07-30 11:27:43 CDT (-0400)

This material has been received and accessioned into Rod’s herbarium.

A clarification. EDITED
By: R. E. Tulloss (ret)
2013-07-08 09:29:17 CDT (-0400)


As far as I can tell at the moment, A. rubescens var. alba is neither A. rubescens nor A. amerirubescens, but a third (nth?) species. The only name for this entity at present is Coker’s original name. Somebody on MO has “gotten ahead of the game” and posted the combination that you used here.

It looks like your collecting has been really good.

Do you ever see anything that you would call “A. porphyria” in Missouri?

Very best,


Created: 2013-07-08 08:13:27 CDT (-0400)
Last modified: 2014-03-24 16:25:32 CDT (-0400)
Viewed: 75 times, last viewed: 2016-10-24 21:27:36 CDT (-0400)
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