Observation 188756: Amanita Pers.

When: 2014-11-15

Collection location: Serra de São Mamede, Portugal [Click for map]

Who: zaca

No specimen available

I have doubts that the two specimens belong to the same species, though they live separated by some centimeters only.


Sp. 1
Sp. 1
Sp. 2
Sp. 1 (left) and Sp.2 (right).
Volvas: Sp. 1 (left) and Sp.2 (right).
Sp. 1: KOH test.
A young specimen nearby.

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OK! Thanks, Rod, for clarifying this matter.
By: zaca
2014-11-18 13:02:39 CET (+0100)
Then phalloides is a possibility.
By: R. E. Tulloss (ret)
2014-11-18 05:24:56 CET (+0100)

There are a number of reports of something that is not phalloides, is a member of the Phalloideae, occurs in southern Europe, and fails to turn yellow or yellow-orange with KOH solution.

To complicate matters, we are finding individual specimens that do not react to KOH in North American species that were thought always to turn yellow with KOH. Apparently, it is not a completely constant character. Of course, we need to thoroughly check all the non-yellowing collections to make sure that we aren’t finding another non-yellow (but cryptic) species.

Step by step by step….

Very best,


KOH test negative.
By: zaca
2014-11-17 20:46:23 CET (+0100)
Unfortunately, not;
By: zaca
2014-11-17 12:59:50 CET (+0100)

But I may have a sample of the younger specimen and, if so, later on I will do the KOH test on the dried material.
Rod, your comment solved my question about being or not of the same species. Indeed, in the hours preceding this observation rained a lot and consequently most of the specimens were watersoaked and lost their usual colorations. In particular, these were almost white without the green colour of A. phalloides; However, close to them (less than 1 meter), was developing a very young specimen of what I identified in loco as A. phalloides (I have of photo of it that I will upload later on).
Thanks very much for your comment,
Best regards,

Did you try KOH solution on the either of the specimens?
By: R. E. Tulloss (ret)
2014-11-17 02:48:41 CET (+0100)

The one on the right in the lower pictures seems watersoaked and possibly is decaying. It’s bulb is in good condition and makes me think of a species of section Phalloideae. I think the two specimens could be the same species.

Very best,