Observation 25246: Amanita “sp-N63”
When: 2009-09-14
Herbarium specimen reported


Copyright © 2009 Erlon Bailey
Copyright © 2009 Erlon Bailey
Copyright © 2009 Erlon Bailey

Proposed Names

58% (1)
Recognized by sight
91% (2)
Eye3 Eyes3
Recognized by sight: Since this material is genetically distinct, the present collection will be representive of “sp-N63.”
Based on chemical features: nrITS sequence derived from this collection.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Our group has been going through collections sent to me by Dr. Sam Risctich.
By: R. E. Tulloss (ret)
2015-06-15 00:46:48 CDT (-0400)

One of them can be identified genetically with this collection. Sam’s collection was annotated as being from a spruce forest on Rte. 7 in Cumberland County, Maine.

Very best,


The group is monophyletic so far as my data shows.
By: R. E. Tulloss (ret)
2015-05-10 18:41:56 CDT (-0400)

It appears to be of more recent origin than the Caesareae and the two sections are “sister sections.” Amanita section Vaginatae sensu Zhu L. Yang is probably the largest section in the genus. We have found many genetically distinct collections that might be separate species…and I think that we are still just beginning.

In northeastern North America there are an unknown number of taxa with stipes deeply inserted in the soil. I have seen a number of different cap colors in this group, but have had very bad luck with drying material and getting it home from forays. (E.g., the power goes out overnight at a foray, and the specimens rot in the dryer.)

One group of these probable species is associated with my name Amanitapenetratrix” (named for the amount of soil that had to be penetrated in order to get to the surface). The cap colors range from white to shades of brown. The umbos of these latter probable species are very hard as if designed to push through densely packed soil. These umbos remind me of the perferatoria of Termitomyces species that can blast through the concrete-like mounds of some African termites. I think I have posted about these “perforating” amanitas before on MO.

Very best,


By: Erlon (Herbert Baker)
2015-05-10 18:12:31 CDT (-0400)

Thank you for reporting back with your findings, Rod. As far as subterranean stipes in Amanita sect. Vaginatae , which species are the longest? Is the group monophyletic?

Best wishes,


Hello, Herbert.
By: R. E. Tulloss (ret)
2015-05-08 21:08:18 CDT (-0400)

This is genetically distinct from all specimens of sect. Vagintae from my herbarium that have been sequenced to date. The same is true when the sequence was compared with the sequences deposited in GenBank.

Very best,


Any status?
By: Erlon (Herbert Baker)
2013-07-11 23:30:06 CDT (-0400)

Did you get a chance to look at this, Rod? Thanks.

Material received
By: R. E. Tulloss (ret)
2009-12-17 12:44:40 CST (-0500)


Thank you very much
By: R. E. Tulloss (ret)
2009-09-14 22:12:19 CDT (-0400)

I look forward to the whole packet.

Very best,


By: Erlon (Herbert Baker)
2009-09-14 16:12:32 CDT (-0400)

The stipe is 24 cm long, 15 cm was underground. The cap is 8.5 cm. I’m sending this one out to you, as well as some other unnamed Amanitas.

I think the Clark T. Rogerson foray in Connecticut has had this…
By: R. E. Tulloss (ret)
2009-09-14 15:39:37 CDT (-0400)

…brought in several times.

Herbert did you measure the length of the stipe by any chance? And did you note how much of it was under ground? It looks like 2/3 or more of the stipe in this specimen was below the surface of the substrate.

I am very interested in obtaining dried material of very long stemmed amanitas of sect. Vaginatae with about 50% or more of the stipe underground.

Dried material fitting this general description can be sent to

R. E. Tulloss
P. O. Box 57
Roosevelt, NJ 08555-0057

Very best,


Created: 2009-09-14 14:19:12 CDT (-0400)
Last modified: 2015-05-08 23:15:25 CDT (-0400)
Viewed: 156 times, last viewed: 2016-10-23 19:40:22 CDT (-0400)
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