Observation 204946: Amanita verna (Bull. : Fr.) Lam.
When: 2015-05-24
No herbarium specimen

Notes: koh yellow reation
purple reation to sulphuric acid

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yes i’ll send it
By: Davide Puddu (Davide Puddu)
2015-05-25 11:43:04 PDT (-0700)

just give me postal code and your address

It would be very nice to have a specimen that is a voucher for your…
By: R. E. Tulloss (ret)
2015-05-25 10:14:08 PDT (-0700)

macrochemical spot tests. I think vouchering such tests with dried specimens (as you have done) is very important. If you send me a part of the specimen, I will add information about it and its voucher status to the WAO website.

Thanks for the suggestion.

Very best,

Rod Tulloss

sulphuric acid…
By: Davide Puddu (Davide Puddu)
2015-05-25 08:48:20 PDT (-0700)

it should be at 72% as it is commonly used in mycology.it faded away with the yellow reaction in about 1-2 hours, it was a warm day anyway.

do you need it?
By: Davide Puddu (Davide Puddu)
2015-05-25 08:42:21 PDT (-0700)

i mean i have it dry right now ,but i can send it to you if you want a specimen.

Very nice to show the yellow KOH reaction.
By: R. E. Tulloss (ret)
2015-05-25 08:39:34 PDT (-0700)

And the purple-magenta reaction of the gills to sulphuric acid.

Did the gill reaction fade rapidly? What concentration of sulphuric acid did you use?

Very best,

Rod

Created: 2015-05-25 06:58:50 PDT (-0700)
Last modified: 2015-05-25 06:58:54 PDT (-0700)
Viewed: 111 times, last viewed: 2017-02-19 18:45:58 PST (-0800)
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