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Recognized by sight
31% (2)
Recognized by sight: Looks like this is one of those weird amanitas belonging to a group that has recently been assigned by Cui et al. (2018) to sect. Phalloideae based on a multi-locus genetic analysis. Known USA taxa from this morpho-group include A. levistriata (in Cui et al.), “sp-57” and “sp-N50”. The species in this observation has been posted to MO before (by Ron Pastorino, I think, and possibly someone else). It is likely not A. levistriata.

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= Observer’s choice
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Comments

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Re “sp-57”
By: I. G. Safonov (IGSafonov)
2019-04-03 00:19:56 BST (+0100)

I have a New Jersey collection of what I identified as “sp-57” last year, obs 323946. If memory serves, this is not the first time our club members have collected this taxon in this part of the Garden State; however, we haven’t seen it anywhere else…
I looked for the glass slide with the spore print, but couldn’t find it. I could take a tissue sample and look at the spores in Melzer’s to check for amyloidity. Also, I should consider getting my “sp-57” sequenced…
Ron, the spores of your TX collection, obs 242125, do look vaguely amyloid. I think this makes some sense in light of the recent Amanita study of Cui et al. (2018) that puts A. levistriata and the similar looking, albeit all white, Asian A. ballerina (see the link below) into the basal position of section Phalloideae (!).
https://www.researchgate.net/...

It definitely looks like this one from Texas
By: Ron Pastorino (Ronpast)
2019-04-02 23:47:46 BST (+0100)

https://mushroomobserver.org/242125 but there was some question as to if it is a match to A. “sp-57”

This does look like Amanitasp-57,” which is known from Texas.
By: R. E. Tulloss (ret)
2019-04-02 18:59:09 BST (+0100)

R

The voucher material for this observation has been accessioned in our herbarium.
By: R. E. Tulloss (ret)
2019-04-02 18:50:23 BST (+0100)

Thank you for sending this material.

Very best,

Rod

Created: 2018-11-03 01:01:49 GMT (+0000)
Last modified: 2019-04-03 02:18:50 BST (+0100)
Viewed: 71 times, last viewed: 2019-07-17 06:17:30 BST (+0100)
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