When: 2011-07-23

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

Who: zaca

No specimen available

How to know if this is Lobothallia alphoplaca or L. praeradiosa?
As for the genus, I do not have doubts. By itself, the sui generis paraphyses seem to me to allow it to be concluded in one of two species, according to the descriptions of CNALH.
If, on the one hand, the dimensions of the spores that I got:
11.9 – 13.5 × 7.1 – 9 mM
Q = 1.5 – 1.8, N = 9
Me = 12.9 × 7.9 mm; Qe = 1.7
are more in line with with those of L. alphoplaca, on the other hand, their shape points in the direction of L. praeradiosa. In this case the apex of paraphyses is light brown, which is consistent with the second of those species for pruinose specimens, but this is not really my case.
I am therefore in doubt. There will be other characters that allow to choose one of the species?


Proposed Names

29% (1)
Used references: “CNALH”: http://symbiota.org/nalichens/taxa/index.php?taxon = 51977.
Based on microscopic features
Based on chemical features

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= Observer’s choice
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