Xanthoria parietina forme ramicole des milieux marins de la zone mésique.

        This form is characterized by its occurence at the base of the branches of the Suadea vera bushes sheltered from direct light and in constant humidity. The thallus is small: 2 cm in its greatest length, with apothecia of different sizes and in particular small apothecia at the margin of the large apothecia. In the Suadea vera colonies of Abers and Rias.