Arthothelium dictyosporum is a highly oceanic species that is known from a single locality in Vestland. It is characterized by brownish black maculate apothecia on a thin brownish-grey to fawn thallus with trentepohlioid photobiont. The brown and warted spores are divided by 3–4 transverse and 1–4 longitudinal septa. The apical cell is enlarged.
Arthothelium dictyosporum
(Coppins & P. James) Coppins
|
Andreas Frisch
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NTNU Vitenskapsmuseet
|
Håkon Holien
|
NORD Universitet
