Arthonia ilicina grows on smooth bark of deciduous trees in the boreo-nemoral rainforests in Rogaland and Vestland. It is characterized by brownish black rounded to shortly elongated apothecia on a whitish to cream-yellow thallus with trentepohlioid photobiont. The spores are pale brown and finely warted, 5–6(–7)-transversely septa and have an enlarged apical cell.
Arthonia ilicina
Taylor
|
Andreas Frisch
|
NTNU Vitenskapsmuseet
|
Håkon Holien
|
NORD Universitet