Arthothelium norvegicum is confined to the boreal rainforests in Trøndelag and Nordland. It is characterized by the brownish black, rounded to elliptical, moderately convex apothecia on a thin pale thallus with trentepohlioid photobiont. The colorless spores are divided by 7–9(–10) transverse and 2–3 longitudinal septa. The apical cell is not enlarged.
Arthothelium norvegicum
Coppins & Tønsberg
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Andreas Frisch
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NTNU Vitenskapsmuseet
|
Håkon Holien
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NORD Universitet
