Observation 228891: Amanita sect. Amanita

When: 2015-07-13

Collection location: Pennypack Park, Philadelphia Co, Pennsylvania, USA [Click for map]

Who: Luke Smithson (Mycofreak )

No specimen available

Cap: 2.8 cm – 4.8 cm
Stipe: 2 cm – 3 cm long/ 5-7mm wide

Deciduous forest

Species Lists


Proposed Names

60% (2)
Recognized by sight
64% (3)
Recognized by sight: The bulb eliminates sect. Vaginatae; prominently lined cap margin points away from sect. Validae.
-28% (1)
Recognized by sight: Cap margins with prominent but
short striations. See comments for info pointing away from the A. crenulata proposal.

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= Observer’s choice
= Current consensus


Add Comment
Looking carefully at the smaller one…
By: Dave W (Dave W)
2016-01-25 14:19:37 EST (-0500)

I see what may be an example of the “rolled sock” volva, although somewhat indistinct. The larger one seems to not show the rimmed basal bulb (rolled sock volva), but this may be due to debris adhering to the stipe base. Lack of obvious rolled sock volvas is what initially led me away from multisquamosa… although this does appear to be a good possibility.

Thank you for the comments.
By: Luke Smithson (Mycofreak )
2016-01-25 12:42:05 EST (-0500)

I picked this mushroom at the same time and location as this other Amanita that I tentatively id’ed as crenulata. ( http://mushroomobserver.org/228889?q=2hlDA )

I thought that the two looked distinctly different from one another. In my notes, the bulb of this specimen is very bulbous, but I didn’t note a “rolled sock” type volva. So at this point, I am unsure what to call this.

Agreed about the color.
By: Dave W (Dave W)
2016-01-24 19:20:53 EST (-0500)

Dark for crenulata.

Something else that had bothered me about my own crenulata proposal is that the UV deposits on the cap surface are completely organized into distinct warts, as opposed to the somewhat disorganized powdery patches (occasionally forming well-organized warts) of crenulata.

The brown center of the cap and the persistent partial veil…
By: R. E. Tulloss (ret)
2016-01-24 18:44:28 EST (-0500)

are a negative for crenulata.

If that is a “rolled sock” type of volva on the bulb, then maybe this could be A. multisquamosa. If the younger specimen had a funnel-shaped partial veil, that would back-up the multisquamosa idea.

Very best,


Created: 2016-01-24 16:16:19 EST (-0500)
Last modified: 2016-01-25 13:37:17 EST (-0500)
Viewed: 75 times, last viewed: 2019-02-05 08:38:29 EST (-0500)
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