A Rinodina with a dark grey to grey-green blastidiate thallus similar to Caloplaca chlorina. It is only rarely fertile; its dark grey apothecia contain the Sedifolia-grey pigment (rare in the genus Rinodina). The spores are double-walled (Tunicata type).
Primarily, it is epiphytic on nutrient-rich bark of deciduous trees (e.g., poplars and ashes), often at nutrient-enriched and dusty places. The species prefers well-lit tree bases in open forest, forest steppes, parks or solitary trees. It might also occur on anthropogenic substrates, mainly vertical surfaces of concrete walls, together with Caloplaca flavocitrina. It is distributed all over the area of the Czech Republic, except for the mountains.taxonomic classification:
All records: 41, confirmed 38. One click on a selected square displays particular record(s), including their source(s).