Notes, many appreciative thanks to @mhodges1957: the soredia extend onto the surface of the lobes, and some lobes have narrow pointed projections along edges
For the Easter Pox Lichen (Pyrenula pseudobufonia), cf. inaturalist.org/observations/244352571
For the American Hornbeam (Carpinus caroliniana) host tree: inaturalist.org/observations/244387931