Observation 119080: Amanita thiersii Bas

When: 2012-09-01

Collection location: Jasper Co., Missouri, USA [Click for map]

Who: Jon Shaffer (watchcat)

No specimen available

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A lot of interesting research on this mushroom has been published in recent…
By: R. E. Tulloss (ret)
2012-12-06 03:35:21 PST (-0800)

years. It’s a fascinating critter. It lives on grass clippings and, unlike 95% of all amanitas, requires to symbiotic plant. It will live happily in a petri dish with nothing to eat but cellulose. If not the first, it is certainly one of the first amanitas to grow from a single spore isolate in culture.

There’s a bunch of stuff about it here:


and two articles about it and other “free-living” amanitas were published in the last year by Benjamin Wolfe… He is the first author of both articles.

Check here for the articles:


Very best,


I’ll try….
By: Jon Shaffer (watchcat)
2012-12-05 19:36:45 PST (-0800)

This was the first mushroom that really grabbed my attention and got me started researching and learning. It was in my yard last spring so maybe it will fruit again next year. I’ll collect and save for you Rod. Jon

Jon, if you should happen to make a collection of this species in Jasper Co., …
By: R. E. Tulloss (ret)
2012-12-05 19:23:27 PST (-0800)

I don’t have a record for Amanita thiersii from that county, and I would sure like to have a dired specimen that is backed up by good photos of the fresh specimen on MO.

Very best,


Created: 2012-12-05 19:14:01 PST (-0800)
Last modified: 2012-12-10 12:30:21 PST (-0800)
Viewed: 55 times, last viewed: 2017-11-17 19:08:44 PST (-0800)
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