Observation 209034: Amanita spreta (Peck) Sacc.

When: 2015-07-04

Collection location: West St. Louis Co., Missouri, USA [Click for map]

Who: Judi T. (AvidAmateur)

No specimen available

Fruiting singly in grass under Oaks. Cap: 5.5 cm.; Stem 7.5 cm. tall, 1 cm. wide at base and 8 mm. at apex. Fibrillose at apex; loose volva; white spore print.


Copyright © 2015 Judi Thomas
Copyright © 2015 Judi Thomas
Copyright © 2015 Judi Thomas

Proposed Names

28% (1)
Recognized by sight
47% (2)
Eye3 Eyes3
Recognized by sight: boring brownish striate cap, small saccate membranous volva, possible PV remnants on stipe.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
BTW, Debbie, as I looked back through Dr. T.’s comments
By: Judi T. (AvidAmateur)
2015-07-07 02:39:24 CEST (+0200)

he did suggest A. spreta as a possibility initially.

Debbie: Wow! That’s a simple straightforward description I
By: Judi T. (AvidAmateur)
2015-07-07 02:03:08 CEST (+0200)

will be able to remember and recognize in the future. After a little more research on that species, I think it fits the bill perfectly. Thanks so much!

Dr. T., I appreciate the education in the “finer points” of Amanita
By: Judi T. (AvidAmateur)
2015-07-06 20:02:57 CEST (+0200)

identification. It is so nice of you, with all you have to do, to take the time to educate a novice such as myself. Neither of the specimens I described had ANY evidence (to my newbie eyes) of a formerly existing ring, so that makes me lean toward vaginatae. However, since I am so new to this, I am happy to leave this OB at the genus level and call this one a learning experience… hoping to do better next time:=)

For the next time I find one like this — or any species that may have had a ring and lost it — what are the clues to a lost ring … just a fragment, a discoloration, or something else? Thanks again for helping me to continue learning about Amanitas.

You’re welcome.
By: R. E. Tulloss (ret)
2015-07-06 19:17:41 CEST (+0200)

If you didn’t see a skirt on the stem,…we can’t really decide the issue without microscopy or DNA.

If it never had a ring on the stem, then it belonged in section Vaginatae. If it had one and lost it, then it belonged in the Caesareae.

Very best,


Dr. T., Thanks for looking at my OB so carefully.
By: Judi T. (AvidAmateur)
2015-07-06 16:55:45 CEST (+0200)

I looked very closely for any signs of a veil, but saw none. This is only the third Amanita I have ever found and it just didn’t seem to have any “signature” features that I could use to help me with identification. I found another one a few blocks away that appeared to be the same species as this specimen, and it had a similarly small volva.

This species could be in section Caesareae or section Vaginatae.
By: R. E. Tulloss (ret)
2015-07-06 14:20:45 CEST (+0200)

The cap seems to have grayish pigmentation arranged in what appears to be radial lines or fibrils. The volval sac is on the small side (at least proportionately). It would be nice to know about whether there is a partial veil.

If there is one, does it turn gray as the mushroom matures? I ask this question because the characters that I noted above suggest A. spreta.

Did you see a partial veil, Judi?

Very best,


Created: 2015-07-06 05:17:53 CEST (+0200)
Last modified: 2015-07-07 02:40:59 CEST (+0200)
Viewed: 47 times, last viewed: 2017-06-20 15:35:21 CEST (+0200)
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