Observation 318176: Amanita sect. Amanita

When: 2018-05-31

Collection location: Stockbridge, Henry Co., Georgia, USA [Click for map]

Who: Chris Cassidy (cmcassidy)

No specimen available

Notes:
Found growing about 12-15 from base of oak trunk; sandy soil with oak leaf debris, and beds of moss. Specimen was older, cap was splitting and stipe was bruising reddish/brown. No volva present, though signs of universal veil on cap (could also be sand/dirt?). Fibrillose stipe below prominent ring; not so fibrillose above. Free gills, close. Margin slightly striate (may have developed due to age/maturity). Spore deposit white, though not many spores were deposited.

Images

Proposed Names

53% (3)
Recognized by sight
ret
54% (1)
Recognized by sight
28% (1)
Recognized by sight

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Comments

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Can you tell me what was lost from the bottoms of the stems in the final pictures?
By: R. E. Tulloss (ret)
2018-06-01 23:03:56 CDT (-0400)

As it is the species could belong in any of the three sections of subgenus Amanita.

If there was a bulb at the base of the stem, the species would be in section Amanita.

The stems are complete as they are, they would be totally elongating. In this case (because we now know that a few of the Vaginatae have a ring on the stem), the specimen could belong in either section Vaginatae or section Caesareae.

So it is really necessary to resolve the issue of the natural state of the bottom of the stem; and, probably, we would need a dried speciment from which we could extract DNA and get one or more sequences.

Very interesting species.

Very best,

Rod Tulloss

Created: 2018-06-01 18:52:49 CDT (-0400)
Last modified: 2018-06-01 23:09:05 CDT (-0400)
Viewed: 31 times, last viewed: 2018-12-26 18:06:56 CST (-0500)
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