Observation 96395: Amanita sect. Caesareae Singer

When: 2012-06-03

Collection location: Big Trees Forest Preserve, Sandy Springs, Georgia, USA [Click for map]

Who: Joe Borysko (Pudd)

No specimen available

Proposed Names

-41% (3)
Used references: amanitaceae.org
61% (2)
Recognized by sight: A. arkansana is more brown in the center of the cap.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Hi, Patrick.
By: R. E. Tulloss (ret)
2012-06-05 19:50:04 CEST (+0200)

My hesitancy in this case is because of the strong yellow margin in the button stage and the apparent [emphasis] lack of red-orange felted material on the stipe.


If you hadn’t taken the picture,…
By: R. E. Tulloss (ret)
2012-06-05 18:07:15 CEST (+0200)

You wouldn’t have gotten the feedback.

My youngest sister keeps reminding me that the only foolish question is the one that isn’t asked. That may apply to photos as well as questions.

Occasionally I think I’ve actually asked one…, but generally I think she’s on to something.


I appreciate all the help!
By: Joe Borysko (Pudd)
2012-06-05 16:48:11 CEST (+0200)

Unfortunately I foolishly only took this one picture.

Amanita arkansana lacks bright red pigment on the cap. [edited] [edited again]
By: R. E. Tulloss (ret)
2012-06-05 16:13:06 CEST (+0200)

However, this is a probably species of section Caesareae. To determine material in this section, we need to see the color of the felted material that is usually left on the stipe, the color of the cap, and the color of the annulus (which has to be present to place the species in the Caesareae). Of course we can’t see the spores or other microscopic characters in a photo, but in section Caesareae in eastern North America, we can do a lot with the macroscopic characters…until we find some more taxa that confuse matters. :-) :-(

The cap color would suggest A. jacksonii if it were not for the fact that we have found a number of species with red centers in recent years that are morphologically and genetically different from A. jacksonii.

In the present case, we need the other views of the specimen to nail the ID.

Check out some of the numbered species on the sect. Caesareae directory page:


such as


(the Tequila Sunrise Slender Caesar).

Very best,


Created: 2012-06-05 09:28:43 CEST (+0200)
Last modified: 2012-06-06 00:20:14 CEST (+0200)
Viewed: 97 times, last viewed: 2017-06-13 09:02:36 CEST (+0200)
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