Observation 71364: Amanita gemmata group

When: 2011-07-11

Collection location: Point Reyes National Seashore, Marin Co., California, USA [Click for map]

Who: Toad

No specimen available



Proposed Names

8% (2)
Recognized by sight
83% (1)
Recognized by sight: we have an awful lot of cryptic species in the gemmata group. I am not convinced that this is “pseuodobreckonii” at all, upon a harder look. strongly rimmed bulb, warts, shaggy stipe and what appears to be an annulus lead me to think this is just one of the several unnamed gemmatoid amanitas here in CA.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
also Patrick
By: Debbie Viess (amanitarita)
2016-06-12 13:27:08 CDT (-0400)

both gemmatoid and pantheroid amanitas often have striate margins. phalloides does not, except when created by age and the collapsing of the cap over the gills.

Some phalloides can have a yellowish green cap, or even a tan cap, but not a yellow cap with a hint of orange in the center. You develop an eye for these color differences when you collect lots of material, but colors are variable in amanitas of all species, so color alone is never enough.

“Pseudobreckonii” usually has a very thin volva that can collapse around the bulbous base and stretch well up the stem, as well as sometimes forming a rimmed bulb. The volva around the base of a phalloides tends to be a bit looser. But time changes the look of a volva, too.

Phalloides can also show thin patches on the cap; I would characterize these as more wart-like. So, in other words, there is lots of subtle overlap between the two species. Best to learn the differences with fresh material side by side … come on out and hunt with us some wet (god willing) fall/winter!

By: Christian (Christian Schwarz)
2011-07-11 12:47:04 CDT (-0400)

the color would be atypical, the patches would certainly be atypical, the shaggy stipe is a bit atypical, and the volva would be thinner and more sac-like than collarlike.

By: Noah Siegel (Noah)
2011-07-11 12:32:02 CDT (-0400)

Amanita is the one going by the tag “pseudobreckonii”. It has thick UV remnants on the cap unlike the CA “gemmata” which is more dusted with veil remnants. Dimitar has lots of pictures and info on his site, www.mushroomhobby.com

What distinguishes this
By: Patrick Harvey (pg_harvey)
2011-07-11 10:01:43 CDT (-0400)

What distinguishes this from A. phalloides? The patches? I see neither of them in the Midwest.

Created: 2011-07-11 06:24:39 CDT (-0400)
Last modified: 2016-06-12 13:33:36 CDT (-0400)
Viewed: 79 times, last viewed: 2017-06-09 17:38:35 CDT (-0400)
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