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When: 2021-10-18

Collection location: Colchester, Connecticut, USA [Click for map]

Who: DownyThistle

No specimen available

Big ol’ patch o’ ‘em ‘neath an evergreen


Proposed Names

2% (2)
Recognized by sight
64% (2)
Recognized by sight: Eastern US; mostly yellow pileus with orange tones towards the center; classic subsection Amanita ornamentation on the cap & color like volva all point towards this id. They also often washout to whitish as in the last image.

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= Observer’s choice
= Current consensus


Add Comment
Flavivolvata is probably distinct
By: Nathan Wilson (nathan)
2021-10-20 08:26:07 WIB (+0700)

Based on my experience the west coast A. muscaria var. flavivolvata is pretty likely distinct both due to where it grows and the trees it associates with to say nothing of the color. I could buy that A. muscaria var. guessowii and A. chrysoblema are the same species. I often see both white and yellow orange fruiting bodies on the same day and even under the same tree. For example see the last photo in this observation (although in this case there is clearly an age difference as well). Pure white/albinos are common throughout nature. There are definitely plenty of records of white A. velosa.

Synonyms rebound
By: DownyThistle
2021-10-20 07:46:42 WIB (+0700)

I don’t have much interest in the consensus of this identification. I was happy that I got the Amanita part correct. The snippet I pasted is written as though the molecular work speaks for itself. Whereas, I suspect that human judgement was employed in arriving at the conclusion of insufficient difference to justify distinct species. Anyways. Perhaps it is the environment surrounding certain trees that compels the mushrooms to appear differently, rather than different species of mushroom growing only near certain trees. Just a thought.

Synonyms abound
By: Kyle Canan (myconaut710)
2021-10-19 20:26:03 WIB (+0700)

I understand, however that is very recent news and Alan Rockefeller says that they are far different enough to classify them at the species level. Time will tell, but the differences are visible. The trees they grow with are different as well.

Synonyms abound
By: DownyThistle
2021-10-19 19:25:22 WIB (+0700)

MO website says:
Recent molecular work by Tulloss and Geml has not shown a great enough difference in the DNA of A. chrysoblema (eastern white form), A. muscaria subsp. flavivolvata (western, red form), and A. muscaria var. guessowii (eastern, orange-yellow form), to consider them distinct biological entities at species level. In other words, they are all synonyms; with A. chrysoblema taking precedence because it is the earliest valid name of the three ‘forms’ at species level we have available to use.