Syn.: Parmelia pubescens (L.) Vain.

Reported by Mü4: 119 and Mü5: 53 as being present in Libert's exsiccate (from Belgium: Ard.), but the relevant material (Libert, Pl. Crypt. Ard., Fasc. 1, no 18, LG) is a typical Polychidium muscicola.