Observation 112439: Amanita Pers.
When: 2012-10-05
(45.466° -75.5093° )
Who: Jonathan M
No herbarium specimen

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this is not far
By: Jonathan M
2012-10-06 15:31:24 EDT (-0400)

however, This was the only specimen i managed to saw… thank you!

Is the place where you took the photos close to where you live or work? [edit]
By: R. E. Tulloss (ret)
2012-10-06 14:15:11 EDT (-0400)

I think the best bet is to try to get another set of photos of another fruiting body of the same species appearing again. This time, I think it would be good to collect it and dry it so that you can send it off for identification if necessary.

I think your shot of the stem base should have been helpful…it’s got the key part of the lower stem and upper bulb in focus and in detail, but (as luck would have it) the form of the volval remains still suggests several possibilities.

The yellow on the stem suggests Amanita flavoconia, but I thumbed through 32 years of field notes on A. flavoconia and the shape of the short gills is described as attenuate to subattenuate to rounded truncate (in descending order of frequencey of the terms). You photo of the gills appears to show the short gills predominantly squarely cut off. Would you take a look at that photo and see if you agree? Thanks.


By: Jonathan M
2012-10-06 10:41:32 EDT (-0400)

looking at my pics again i realised I have one who kinda show the bulb, not a good pictures however…

Well, that’s possible; however, the yellow pigment doesn’t usually persist very long…
By: R. E. Tulloss (ret)
2012-10-05 23:27:49 EDT (-0400)

in the volva on the cap of the eastern entity that is being called A. muscaria var. guessowii at the moment. It could be frostiana, also. I don’t think there are so many truncate short gills in flavoconia; but that is not a normal way of IDing the latter species. One of the keys for the muscarioid fungi is the rings encircling the lower stem and the top of the bulb. For frostiana the bulb often has a volva more like the one in the pantherinoid taxa (“rolled sock”). For flavoconia the volva would not be very persistent at all and usually left in pieces in the substrate. Getting a shot of the bulb is very useful in IDing amanitas from photographs.

Still, as mentioned before, the pix are interesting and enticing.


sorry no bulb shot
By: Jonathan M
2012-10-05 23:07:58 EDT (-0400)

and this was the only specimen, can it be just another amanita muscaria?

I meant to say…
By: R. E. Tulloss (ret)
2012-10-05 22:26:47 EDT (-0400)

that the close-up shots are very nice. No matter what species this may turn out to be, the nearly complete covering of the cap by the volva is not a common site after the stipe has expanded this much. Also, the gills close up shows us that many of the short gills are abruptly cut off (truncate), but a least one seems to be gradually narrowing toward the cap flesh (attenuate).


Do you still have access to the material?
By: R. E. Tulloss (ret)
2012-10-05 22:24:19 EDT (-0400)

Could you get a shot of the bottom of the stipe? Probably there is a bulb there that could tell us something that would help with the ID. Also, can you show us or tell us whether the edge of the cap had radial grooves on it?

Very best,


Created: 2012-10-05 21:34:32 EDT (-0400)
Last modified: 2012-10-05 21:34:35 EDT (-0400)
Viewed: 71 times, last viewed: 2016-10-21 10:14:22 EDT (-0400)
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