Lichens of Belgium, Luxembourg and northern France
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Melanohalea exasperatula (Nyl.) O. Blanco, A. Crespo, Divakar, Essl., D. Hawksw. & Lumbsch |
Syn.: Melanelia exasperatula (Nyl.) Essl., Parmelia exasperatula Nyl.
Corticolous, mainly on roadside trees, especially on Fraxinus and Ulmus, or in orchards, always in rather nitrophilous conditions.
Belgium: Mar.: R, Fl.: AR, Camp.: AR, Brab.: AR, Mosan, Ard., Lorr.: AC.
Luxembourg: Ard.: AC, Lorr.: AC.
France: Boul.: RRR, Pic.: RR, Mosan, Ard., Lorr.: AC.
Lit.: Boul.: 70, Ca: 139, Ho: 177, La66: 429, Qu: 103-104, WS: 39, 78.