Phaeophyscia orbicularis forme sur métal émaillé.

      This form, presented here as a curiosity, differs from the type only by its occurence on an enamelled metal substrate where it behaves as a pioneer species, here an indicator panel, whose very smooth enamelled surface did not prevent it from appearing to settle with Melanelixia subaurifera forme sur substrats artificiels more accustomed to colonize this kind of artificial substrate. This form is much less dark than the form seen on very dirty wrecks of plastic boats, see: Physcia orbicularis forme sur substrats artificiels.