This lichen and other two (see observation 209587 and observation 209588) with similar appearance to the nacked eye lived on the same tree. The one considered here has a distinctive feature: being clearly a Pertusaria, its apothecia are disciform and have a telotremataceae appearance. In this respect, it is very similar to the one in observation 199211 and I believe to be of the same species. Clearly to be confirmed by microscopy, that I intend to do soon.
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I think that the host tree is Cercis Siliquastrum; At least the form of the leaves and of the seeds coincide with this species.
The microscopy completely agrees with that of observation 199211 (see also the notes therein). This time I obtained the following values for the dimensions of the spores:
(125.7) 135.7 – 174.3 (183.6) x (30.3) 51.3 – 71.9 (80.1) µm
Q = (2) 2.2 – 2.8 (4.1) ; N = 29
Me = 153.9 × 62.1 µm ; Qe = 2.5
Therefore, I infer that it is Pertusaria ophthalmiza again.
Created: 2015-07-11 15:10:18 PDT (-0700)
Last modified: 2015-07-19 12:33:18 PDT (-0700)
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