When: 2014-08-21

Collection location: Planalto das Cezaredas, Portugal [Click for map]

Who: zaca

No specimen available

Notes:
Similar to the one in observation 163519 with the difference of having a C- reaction, instead of a weak C+ orange, and also a weak KC+ orange reaction. The result of the application of the key in the paper cited there (repeated here for convenience) is the same: Pertusaria heterochroa. It is characterized by having asci with two spores each, the KC+ orange reaction, striated spores and reacts C- in hymenium, in which it differs from P. dispar with hymenium C+ red. In this specimen, the striation of the spores is remarkable in some of them.
A particularity of this specimen is that its thallus is being invaded by Sphinctrina tubiformis, causing the fallen of the verrucas, leaving pits on the thallus. In this respect it is similar to the one in observation 163571.

Images

Chemical reactions;
Microscopy: Apothecial section;
Microscopy: Part of apothecial section and spores
Microscopy: Asci and spores;
Microscopy: Spores.

Proposed Names

87% (1)
Used references: Monserrat Boqueras and Xavier Llimona: The Genus Pertusaria (Lichenised Ascomycotina) on the Iberian Peninsula and Balearic Islands. I Subgenus Pertusaria, Mycotaxon 88: 471-492, 2003.
Based on microscopic features
Based on chemical features

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