Arthothelium ruanum is a southern species of humid forests and woodlands. It is characterized by black maculate apothecia that often disintegrate in the centre and regenerate into swarms of minute juvenile apothecia. The photobiont is trentepohlioid. The brown and warted spores are divided by 5–8 transverse and 1–3 longitudinal septa. The apical cell is not enlarged.
Arthothelium ruanum
(Massal.) Körb.
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Andreas Frisch
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NTNU Vitenskapsmuseet
|
Håkon Holien
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NORD Universitet
