Observation 174660: Amanita sect. Vaginatae sensu Zhu L. Yang

Birch-dominated woods.

Specimen was air-dried.

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Eye3 = Observer’s choice
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Thanks Dave,
By: groundhog
2014-10-28 13:55:53 PDT (-0700)

This material has been received and accessioned to Rod’s herbarium. We have also scheduled it for DNA sequencing.

After some work this morning, I’m finding that a number of collections….
By: R. E. Tulloss (ret)
2014-08-21 08:29:54 PDT (-0700)

listed under “xanthomitra” have to be considered among the “rhacopus group” because of DNA similarities. We’re going through a good exercise with regard to that group. Hopefully, we’ll come out the other side with a better understanding of the things that used to get lumped under “ceciliae in the sense of U.S. authors.”


“sp-V03” and xanthomitra…
By: Dave W (Dave W)
2014-08-21 06:03:20 PDT (-0700)

each look like good possibilities.

One thing I had not previously mentioned. There were some oak trees in this area.

There are two directions…
By: R. E. Tulloss (ret)
2014-08-20 08:43:41 PDT (-0700)

If we consider the cap as tan, then “sp-V03” might be a match.

If we consider the cap to be more olivaceous (less likely to my eyes) then, something similar to (but not identical with) “xanthomitra” is a possibility.

At any rate, given the current status of my understanding on these matters, I can hope that we can derive a useful region/gene.

Very best,


This one seems to me…
By: Dave W (Dave W)
2014-08-20 06:26:46 PDT (-0700)

to blur the distinction between rhacopus and sinicoflava.

Material preserved, but several days of open air-drying may have rendered it unfit for molecular analysis.

This looks like another one of the rhacopus group.
By: R. E. Tulloss (ret)
2014-08-20 05:41:36 PDT (-0700)

I will not try to predict which one this would be.



Created: 2014-08-19 21:19:09 PDT (-0700)
Last modified: 2018-01-05 15:30:02 PST (-0800)
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