Observation 137879: Amanita levistriata Dav. T. Jenkins
When: 2013-06-27
No herbarium specimen

Notes: 4.5cm cap diameter x 8cm stipe length, growing on ground under oaks in mixed forest. Smooth, elliptical, amyloid spores 7.5×5.5µ

Proposed Names

20% (2)
Recognized by sight
60% (2)
Recognized by sight: This is a nice set of diagnostic photographs including the cross sectiion. If I’m right about the identity, it would be nice to get spores measurements, DNA sequences, and post of the pimage or close-ups from the images on WAORET

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Debbie Viess (amanitarita)
2013-06-29 09:56:27 CDT (-0500)

the macro is a spot-on match for levistriata as described and as seen in other photos.

It would be interesting to see that pseudo-amyloid reaction, though.

Not every clue is clear cut, but I think that we can go with a preponderance of evidence.

I just noticed that the margin of the cap in the second photo appears to be striate…
By: R. E. Tulloss (ret)
2013-06-28 21:25:16 CDT (-0500)

under the floccose volval material. The name levistriata means “lightly striate.”


By: Brian Adamo (adamo588)
2013-06-28 20:45:05 CDT (-0500)

I didn’t think that I had anything interesting, so the slide got recycled. When will I ever learn? Next time I’ll preserve the evidence.


Just looked at spores of A. levistriata and….
By: Cristina Rodríguez-Caycedo (Crispeta)
2013-06-28 18:23:06 CDT (-0500)

…a pile of them in melzers and at lowest total magnification permitted for the optical illusion of dark spores (quick look of squash at 100×), but after increasing the total magnification a bit (400x), comparison of basidia with floating spores revealed they had the same color and even the “pile up” of spores showed a typical inamyloid reaction.

I would love to see what you saw. If at all possible, could you post a picture of the spores in melzer (if you still happen to have the spore print on slide)?

Very best,

Looked amyloid to me
By: Brian Adamo (adamo588)
2013-06-28 17:56:31 CDT (-0500)

I do spore prints directly on slides, so there’s a pretty heavy deposit when I drop the Melzer’s on it. It definitely turned it black.

very cool amanita!
By: Debbie Viess (amanitarita)
2013-06-28 14:50:27 CDT (-0500)

not one I am familiar with.

sometimes, a hyaline spore can look sorta kinda amyloid.

the rest of the features depicted here do seem in line with the species description for A. levistriata.

Are you sure the spores are amyloid?
By: R. E. Tulloss (ret)
2013-06-28 14:30:41 CDT (-0500)

Hello, Brian.

The form of the bulb, the color of the volva, and ring of volva tissue on the top of a bulb with a raised margin are very reminiscent of Amanita levistriata.

This is not previously known from Tennessee. It must have hopped a steamboat from New Orleans. :)

Your spores measurements are at the lower limit of the ranges of length and width that WAO posts for levistriata.

At any rate, you might check this out:


Very best,


Created: 2013-06-28 11:28:08 CDT (-0500)
Last modified: 2013-06-28 14:48:48 CDT (-0500)
Viewed: 108 times, last viewed: 2016-10-23 19:03:57 CDT (-0500)
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