Observation 214788: Lecanora rubicunda Bagl.
When: 2015-08-24
Who: zaca
No herbarium specimen

Notes: Growing on the bark of an oak tree.
It seems that this species is very widespread here. I found it several times this year at different locations. Its distinguish feature is the chemistry, with a big concentraion of norstitic acid, causing the formation of big needle red crystals. This time I have analyzed this feature in more detail and attach the corresponding photos.

Images

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Microscopy: Close up of the section at the final stage of the K reaction.
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Microscopy: Sections;
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Microscopy – Development of the K reaction: 1- Section in water; 2- inserting a drop of K gives an intense yellow efflux; 3- evolution to a red reaction still with some yellowish tones, starting the formation of red crystals; 4 – Final stage, only red is visible and a the red crystals a...
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Microscopy: Section in the final stage of the K reaction;

Proposed Names

86% (1)
Eye3 Eyes3
Based on microscopic features
Based on chemical features: K+ yellow to red with the formation of red needle crystals.

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2015-08-30 15:18:11 EDT (-0400)
Last modified: 2015-08-30 15:18:24 EDT (-0400)
Viewed: 5 times, last viewed: 2016-04-14 08:05:34 EDT (-0400)
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