Observation 164346: Amanita Pers.

When: 2014-04-28

Collection location: University of South Alabama, Mobile, Alabama, USA [Click for map]

Who: Bryan Groza (bgroza)

No specimen available

Kind of dry specimens, only a few inches tall. No visible striations on cap edge. Veil bits on cap buff colored and very flat, cap otherwise brown to black at the center. Hollow stipe. Not sure what to call this, couldn’t recognize in guides and wouldn’t key out.



Proposed Names

51% (1)
Recognized by sight

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

= Observer’s choice
= Current consensus


Add Comment
Yes, the annulus does eliminate the Vaginatae possibility.
By: R. E. Tulloss (ret)
2014-05-01 08:09:22 CDT (-0400)

The species is mysterious.

Keeping dried material dry in the U.S. southeast means having an airconditioned habitat…possibly with the addition of a dehumidifier in the room where the dried material is kept. Moisture and mold are significant enemies of herbaria in warm and humid climates. Good luck if you go take the herbarium path.

Very best,


Thanks, Rod
By: Bryan Groza (bgroza)
2014-04-30 23:26:52 CDT (-0400)

Thanks for offering your insight. There is indeed a bulb under all that sand, I saw it on a couple of them. Sorry I couldn’t get a cleaner photo of it. I am noticing the striate anulus, at least.

Maybe I should start a personal herbarium. I am new to the South and am still finding new resources to help with identification.

Good morning, Bryan.
By: R. E. Tulloss (ret)
2014-04-29 09:44:46 CDT (-0400)

While there are significant concentric wrinkles on the cap edge, I think I still detect distinct marginal striation on the edge of the cap.

Striations on a pigmented cap in North America suggests that the spores might be inamyloid. Hence, a starting guess could be that the mushroom falls into Amanita subgenus Amanita.

Unfortunately, I cannot tell from the images if there is a bulb at the stipe base or if there is a saccate volva on a totally elongating (non-bulbous) stipe.

I’m not surprised that you could not key this out. Do you occasionally try the Texas and Gulf Coast checklist here:



Except for rather dark temporarily code-numbered species in sect. Vaginatae, it may be no help in this case.

I see that you did not retain a dried specimen according to MO. Do you occasionally dry your collections for study?

Can you offer any enlightenment regarding the stipe base?

Very best,

Rod Tulloss

Created: 2014-04-28 23:18:52 CDT (-0400)
Last modified: 2014-04-28 23:20:14 CDT (-0400)
Viewed: 37 times, last viewed: 2019-07-12 18:49:49 CDT (-0400)
Show Log