Observation 151111: Amanita Pers. sect. Amanita
When: 2013-11-03
(39.7733° -74.5336° )
Herbarium specimen reported

Notes: I am not quite sure which section to place this one into because of the vague structure of the stipal base. It does appear to have a saccate volva that got partially destroyed upon popping the specimen out of the ground. Thus, I would bet my money on sect. Caesareae. The “bulb” doesn’t look like a typical one from sections Amanita or Validae anyway. I understand that marginal striation are not common in sect. Validae — Rod correct me if I am wrong.

The cap of the larger mushroom is 5 cm in diameter; marginal striations are up to 8 mm long. The fruitbody is 9 cm tall. The stipe is oval in cross-section, and gets wider at the bottom.

The material is preserved for RET.

Proposed Names

21% (2)
Eye3
Recognized by sight: A combination of striate cap margins, an annulus and a saccate volva
-30% (2)
Recognized by sight
ret
60% (2)
Eyes3
Recognized by sight: Igor, you are quire right that striate cap margin in young material of sect. Validae are uncommon. There is at least one exception; however, it is in Africa.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Hello, Rod
By: I. G. Safonov (IGSafonov)
2013-11-04 14:03:21 EST (-0500)

I attached two more pictures showing details of fruitbody cross-section and the structure of the stipal base. The stipe is hollow. Is this common for sect. Amanita? Also, the “bulb” doesn’t appear to be an integral part of the stipe – one can clearly see a “seam” separating it from the stipe that narrows down a sharp tip.

Hello, Igor.
By: R. E. Tulloss (ret)
2013-11-04 08:22:03 EST (-0500)

I think that your cross-section photograph shows a true bulb with a limbate volva. The volval material on the cap is crumbly and consistent with a limbate volve in Amanita sect. Amanita. This material could be very interesting, and I look forward to seeing it.

Rod

Created: 2013-11-03 23:00:32 EST (-0500)
Last modified: 2013-11-04 13:14:40 EST (-0500)
Viewed: 39 times, last viewed: 2016-10-27 23:18:50 EDT (-0400)
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