Collection location: Estádio Nacional, Oeiras, Portugal [Click for map]
A sterile specimen, growing on bark, with all chemical reactions negative.
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I returned to the site od the observation and “rediscover the same specimen”. I was even able to see the result of the tests made 4 days ago (see thenew photo attached). I performed the new spot tests on medulla and I have to say these were not according what was expected. In fact, the C reaction was negative and the K and KC reactions were very weak yellow. I uploaded a photo with these reaction. In order to avoid mistakes I performed the spot test again in other palece in the same specimen and also in a new specimen that I found nearby. All these reactions were the same.
That is really very close. I can only notice a small change in colour, mine is whitish, yours greyish. Even some very small dots (what are they? being too small for ostioles) are present in both specimens. I only hope to find the specimen again and do the appropriate spot tests. According to the Sipman’s key is “rare in western and central Europe” and, the bad new is that, it has “usually a single reddish disc”.
Many thanks, Jason.
I noted in the latter two, that the cortex was apparently C-, but the medulla was C+ red. Note the soralia are virtually invisible. It was a joke originally, but now, I really wonder. Maybe this is what you have…
Created: 2012-06-12 16:43:41 CDT (-0400)
Last modified: 2012-06-12 16:43:43 CDT (-0400)
Viewed: 80 times, last viewed: 2017-06-13 03:54:54 CDT (-0400)