When: 2017-06-06

Collection location: Long Hunter State Park, Davidson Co., Tennessee, USA [Click for map]

Who: Brian Adamo (adamo588)

No specimen available

Cap is 80mm wide, with 18mm long striations. Stem is 190mm long x 7-11mm wide. Spores are 8-10 µ, globose and inamyloid. This is the first one I’ve seen with a stem that long and so much of the cap striated.


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Thank you for your note, Brian.
By: R. E. Tulloss (ret)
2017-06-08 08:53:01 CDT (-0400)

I wish you good luck on your next site visit.

Very best,


Additional possible candidate:
By: R. E. Tulloss (ret)
2017-06-07 20:14:18 CDT (-0400)
My concerns about hahatonka are…
By: R. E. Tulloss (ret)
2017-06-07 20:11:36 CDT (-0400)

that we don’t have evidence that it has a pronounced central umbo on the cap and that its zonate pattern on the cap involves four distinct alternating color zones on the cap (with a pallid zone in the center) while the present material has three distinct color zones with a dark zone in the center.

As long as the number of color zones are four or five, the color of the central zone is known to be variable in at least one species (umbrinolutea, which is outside the Penetratrices). The variability is revealed in field notes and photographs of Dr. Bas.

We don’t know of this variability in the Penetratrices. We might find it in the future, of course.

It remains important to examine more collections of the Penetratrices…especially form the southeastern U.S. states from which the number of such collections is still small.

We are still in a period in which the number of probable new taxa in the Penetratrices is increasing by several in each collecting season. I think we can expect this phenomenon to continue in 2017. There is good evidence that this is already happening.

May and June appear to be months in which the Penetratrices fruit in the southeastern states.

Very best,


It is likely that this species belongs in the group including …
By: R. E. Tulloss (ret)
2017-06-07 19:37:04 CDT (-0400)

Amanita penetratrix. See sample links above.

Can you possibly obtained dried material of this interesting material?

Very best,


Created: 2017-06-07 16:41:04 CDT (-0400)
Last modified: 2017-06-07 19:56:40 CDT (-0400)
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