Observation 163720: Amanita gilbertii Beauseign.
When: 2014-04-18
Collection location: Braga, Portugal [Click for map]
No herbarium specimen

Notes: Under oaks, near the river.

Proposed Names

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Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Thank you Rod :)
By: Elsa (pinknailsgirl)
2014-06-23 20:00:15 EDT (-0400)
Hello, Elsa.
By: R. E. Tulloss (ret)
2014-06-23 17:48:07 EDT (-0400)

The gills did not survive very well. They were under attack by mold when dried and got very crispy in the drying process. However, we can see spores; and they are much too narrow for verna. We found many cylindric spores (with the length/width ratio well over 2.0). This would be compatible with your idea of gilbertii.

Very best,

Rod

Thanks Elsa,
By: groundhog
2014-06-20 14:48:09 EDT (-0400)

This material has been received and accessioned to Rod’s herbarium.
-Naomi

I do not have KOH
By: Elsa (pinknailsgirl)
2014-04-18 15:42:12 EDT (-0400)

solution. I tried with some oven cleaner product that have KOH but didn’t change colour.

The specimens are here to dry and send you.

Do you have some 5% KOH aqueous solution?
By: R. E. Tulloss (ret)
2014-04-18 15:17:52 EDT (-0400)

A drop of 5% (or slightly greater) concentration of KOH in water could help here.

You will get a yellow or orange-yellow reaction on species like virosa and verna; however, I don’t think you will get a color change on gilbertii (which has been assigned to sect. Lepidella and should have a pointed stipe base quite often).

White specimens of A. phalloides will not give a yellow reaction.

There is also at least one white member of the Phalloideae reported from southern Europe (especially Portugal, Spain, and southern France) that is not phalloides AND does not turn yellow with KOH. I do not know if this entity has been given a name at this time.

A lot of work is going on at present concerning the “destroying angels” of sect. Phalloideae in Europe, Asia, North America, and (with related taxa) in Australia.

I would be very interested in examining material from

Created: 2014-04-18 12:38:44 EDT (-0400)
Last modified: 2014-06-23 19:14:43 EDT (-0400)
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