Observation 202249: Arthonia radiata (Pers.) Ach.

When: 2015-04-03

Collection location: Gaeiras, Óbidos, Portugal [Click for map]

Who: zaca

No specimen available


Microscopy: Section and alga;
Microscopy: Asci and spores.

Proposed Names

29% (1)
Recognized by sight
58% (1)
Eye3 Eyes3
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I was comparing …
By: zaca
2016-03-26 07:11:17 CDT (-0400)
this with my previous observation of Arthonia radiata and everything matches. The only difference is that in former observations the thallus was pruinose. Since this feature can be ephemerous or not present, Since, on the other hand, the habitat is adequate, I think I found the species for this specimen.
Microscopy added.
By: zaca
2015-04-12 12:51:52 CDT (-0400)

I have many doubts about the classification of this specimen, including:
- The unusual form and size of the apothecia;
- The form and septation of the spores (most of the spores were shriveled in the asci);
- The alga seems “greener” than the usual Trentepohlia.

Created: 2015-04-03 17:17:17 CDT (-0400)
Last modified: 2016-03-26 07:12:11 CDT (-0400)
Viewed: 42 times, last viewed: 2017-06-20 01:38:52 CDT (-0400)
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