Observation 143593: Amanita rubescens Pers.

When: 2013-08-23

Collection location: Stafford, Staffordshire, England [Click for map]

Who: _Matt_

No specimen available

Growing with Birch.


Proposed Names

58% (2)
Recognized by sight
84% (1)
Recognized by sight

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Add Comment
Good observation of detail! Those rings can occur on a number of taxa.
By: R. E. Tulloss (ret)
2013-08-23 18:02:59 CEST (+0200)

They represent that remains of the part of the volva that was between the bottom of the ring and the developing stem in the primordium of an Amanita. That material is called the “internal limb” of the volva. Amanitas are the only type of agaric that don’t develop by first producing a bit of stem then growing a bit of cap and then growing gills down into empty space below the cap. Instead amanitas develop as a solid lump with cap, stem, gills, volva all developing together from a very tiny primordium. All the parts are interconnected as they develop on all surfaces. There are no gaps. Hence, anywhere that parts of the mushroom must separate during expansion tissue must die away or be relatively breakable.

On all the taxon pages on the WAO website, there are “teaching topics” in the upper left of the page. The one on “lamella edge tissue” (I think that’s what I called it) is relevant to the subject of the mechanical separation of parts in an Amanita.

Very best,


By: _Matt_
2013-08-23 17:43:36 CEST (+0200)

Not far off to be honest. It was a similar situation with A. muscaria last year. But slightly less abundant. It’s a real shame i don’t understand the genus enough to eat them as I certainly would like to. I know what i think is A. rubescens and there is certainly enough of the same ones about for me to have a solid idea of how they look, but i don’t know anywhere near enough about the other species. Maybe much later in the season. Otherwise next year. The rason i didn’t label this one as rubescens is that there are thin rings on the bulb (nothing like A. muscaria but still) which I’ve never seen once on any other specimens.

This is probably rubescens…again.
By: R. E. Tulloss (ret)
2013-08-23 16:46:50 CEST (+0200)

They must have been so plentiful that you had to work hard not to step on them. :)