Growing on oak bark. Orange/yellow thallus, lower surface white with numerous rhizines. Can not detect soredia on top or side surface. Although, in one section on underside of lobe saw detachable white specks(see photo) but may be debris. cortex K+P, medulla K-. I think X.hasseana is a good guess but that species is suppose to have pycnidia which I can't find/recognize.