Arthonia granitophila is a species of sheltered siliceous rocks. It is known in coastal Norway north to Namsos in Trøndelag. Arthonia granitophila is characterized by rounded to shortly elongated, black apothecia with well-developed margin and exposed disc. The granular thallus contains a trentepohlioid photobiont. The 1-septate spores are brown and warted when old.
Arthonia granitophila
Th.Fr.
|
Andreas Frisch
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NTNU Vitenskapsmuseet
|
Håkon Holien
|
NORD Universitet
