Observation 113987: Amanita smithiana Bas

When: 2012-10-16

Collection location: Diamond and Crater Lake, Oregon, USA [Click for map]

Who: Ron Pastorino (Ronpast)

Specimen available

These were found in mixed conifers @ ~ 3800 ft.
One seems to have been gnawed upon by a small varmint.
The spores were white and amyloid.
Spores were ~ 9.1-11.1 X 6.3-7.1 microns(13 measurements)
Q range = 1.40-1.61. Q(ave) = 1.49.

The spores do fit the description for Amanita smithiana.


Spores in Melzers @ 1000X.
Spores in Melzers @ 1000X.

Proposed Names

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Add Comment
Amanita smithiana is in the same stirps with A. rhopalopus per Bas.
By: R. E. Tulloss (ret)
2012-10-21 16:38:44 CDT (-0400)

They share a large number of morphological characters including the deepling radicating bulb. These ladies lack that bulb; hence, I am suspicious enough to ask about the clamps. Bas’ stirps Rhopalopus is one of his clamp-bearing stirpes.

There are more than a few undescribed lepidellas from the West Coast that I haven’t gotten posted on WAO yet…and probably more that I know nothing about whatsoever. So there is a little room for thinking that what you have MO-observed might not have a name.

Very best,


Rod, I didn’t look
By: Ron Pastorino (Ronpast)
2012-10-21 11:05:32 CDT (-0400)
any further than the spores. Do you think these could be something else?
Hi, Ron.
By: R. E. Tulloss (ret)
2012-10-21 09:44:22 CDT (-0400)

Did it have clamp connections on the basidia?


Created: 2012-10-21 00:05:37 CDT (-0400)
Last modified: 2012-10-21 11:01:11 CDT (-0400)
Viewed: 61 times, last viewed: 2018-04-18 07:32:18 CDT (-0400)
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