Observation 205481: Amanita frostiana (Peck) Sacc.
When: 2015-06-01
No herbarium specimen

Notes: Cap: 3.5 cm
Stem: 6.5 cm


2015-06-01__ga_KR 066.jpg
2015-06-01__ga_KR 067.jpg
2015-06-01__ga_KR 068.jpg
2015-06-01__ga_KR 069.jpg
2015-06-01__ga_KR 070.jpg
2015-06-01__ga_KR 071.jpg
2015-06-01__ga_KR 072.jpg
2015-06-01__ga_KR 073.jpg

Proposed Names

28% (3)
Recognized by sight
46% (2)
Eye3 Eyes3
Recognized by sight: Volva forming a marginate “collar” atop the stipe base. See comment.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
This collection also has squarely truncate short gills.
By: R. E. Tulloss (ret)
2015-06-03 20:10:55 PDT (-0700)

Apparently quite a few of them. Amanita flavoconia’s are dominantly NOT truncate. So there iss another reason why this probably isn’t A. flavoconia.

Very best,


At first glance….
By: Dave W (Dave W)
2015-06-02 09:09:08 PDT (-0700)

seemed like “flavoconia” may be applied with little hesitation. Although the cap margin is grooved, it is not obvious to me that these are true striations. As a flavoconia matures and the cap context thins/dries marginal grooves may develop. But the one thing that I think strongly leads away from flavoconia (or any of the other similar yellow/orange types from section Validae) is the white marginal collar atop the stipe base.

The basal bulb appears to be partially excavated. Frostiana should have a rotund basal bulb. Seventh photo from the top down shows remnants of an annulus on the stipe.

Stipe surface and annulus seem quite yellow for frostiana. So I’m wondering about this one.

Created: 2015-06-01 20:05:15 PDT (-0700)
Last modified: 2015-06-03 20:01:02 PDT (-0700)
Viewed: 90 times, last viewed: 2016-10-25 10:27:04 PDT (-0700)
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