Circinaria sp. ou Aspicilia sp. K+ orange.

      This taxon exhibits the following chemical reactions: C-, K+ pale orange, KC+ pale orange, P- and is difficult to identify. Is it a Circinaria from the Circinaria contorta group or an Aspicilia from the Aspicilia intermutans group? (Or something else?).

N.B. On a concrete wall of a lake reservoir.