Observation 25495: Amanita Pers.

When: 2009-09-19

Collection location: Beaver Co., Pennsylvania, USA [Click for map]

Who: Bob Zuberbuhler (Bob Z)

No specimen available

This mushroom was solitary and under a group of oaks. The cap was 4" wide and slightly convex. It was tan and there were many soft warty structures scattered over the cap. The cap and the warts were darker toward the center. The rim was rolled under. The 5" stalk was 1/2" in diameter at the top and expanded to a 1 1/2" in diameter bulb near the ground. There was an extensive partial veil attached to the rim of the cap and to the upper part of the stalk. The gills did not extend onto the stalk.

I’m calling this Amanita muscaria var formosa but would appreciate an expert opinion.

Proposed Names

82% (1)
Recognized by sight

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I don’t this is Amanita muscaria.
By: R. E. Tulloss (ret)
2009-09-20 02:57:26 CEST (+0200)

In fact I don’t think that it fits into subgenus Amanita. I think it most probably a species of Amanita sect. Lepidella. I was not able to see the warts in sufficient detail to make a guess as to a specific species. Given the geographic location and the similar taxa that have fruited this year, it could be A. rhopalopus or A. ravenelii…or perhaps something else.

It would be nice to assign a subgenus, section, or subsection in a naming on MO. Because of the diversity of small groups in sect. Lepidella, the Amanita x group type of name is very unsatisfactory and unusable for lepidellas. If we had a good taxonomic structure for sect. Vaginatae, we’d find “Amanita vaginata group” a very unuseful name also.

More, perhaps,


Created: 2009-09-20 02:44:14 CEST (+0200)
Last modified: 2009-09-20 02:44:14 CEST (+0200)
Viewed: 29 times, last viewed: 2017-06-06 09:53:05 CEST (+0200)
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