Growing on the ground near pine and spruce.
Caps up to 7.9 cm across and somewhat tacky.
Striations up to 1.3 cm long.
Spore print white and not amyloid.
Spores ~ 9.8-12.4 X 9.2-11.9 microns, globose to subglobose and smooth.
Q(range) = 1.00-1.07
Q(avg) = 1.03 n=18


Spores in Congo red @ 1000X

Proposed Names

82% (1)
Based on chemical features: nrITS (0.1% genetic distance) and nrLSU sequences (0.1% genetic distance)

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= Observer’s choice
= Current consensus


Add Comment
Thanks for the update Rod.
By: Ron Pastorino (Ronpast)
2019-11-12 14:15:02 PST (-0800)

I had to delete my initial comment when I saw your correction.
I’m always happy to support your efforts and to see new species better defined…not to mention adding a new species to my “Life List”.

The preceding comment has been extensively corrected.
By: R. E. Tulloss (ret)
2019-11-12 13:59:07 PST (-0800)


The genetic sequences could not be joined (no overlap); however, the results are…
By: R. E. Tulloss (ret)
2019-11-12 13:43:55 PST (-0800)

very supportive of a diagnosis of Amanita lindgreniana. Our [EDITED] previous photo of the species suffers from glare. So I think we will have a better idea of cap color from your photos.

This is our first collection south of Washington and Montana.

Thanks again for your years of support and generosity.

Very best,


The voucher material for this observation has been accessioned in our herbarium.
By: R. E. Tulloss (ret)
2019-04-02 10:16:20 PDT (-0700)

Thanks, again, Ron.

Very best,


Rod, yes, I thought they were
By: Ron Pastorino (Ronpast)
2018-12-08 07:49:15 PST (-0800)

interesting also as they didn’t quite seem to fit in to what I normally see in the more central coast of California.
The lack of any gray tints and other traits seemed different from the usual suspects. Spores seemed a little smaller also.
Noah Siegel has a lot more experience with collecting in this area, so could probably answer as to how common these are.
They can be Roosevelt bound if desired.

Good looking material, Ron.
By: R. E. Tulloss (ret)
2018-12-07 20:26:59 PST (-0800)

It looks very interesting. Are you familiar with this amanita from past experience? I’m a bit uncertain. Do you think that you are seeing a different set of taxa in Del Norte County?

Very best,