Ramalina fastigiata forme ramicole.
This form differs from the type through its appearence, less compact, and its branches often steriles more or less divided, disposed with no apparent order, its apothecia more rare (always terminal). This form comes on small shrub branches : Tamarix, Prunus... permanently submitted to marine winds and splash along the shore.
N.B. Taxon with crossed characters and therefore difficult to classify.