Syn.: P. clementiana (Ach.) Kickx, P. astroidea auct., non (Clem.) Nyl.

On isolated trees with a well-lit and slightly nitrophilous bark.

Belgium: Mar.: RR, Fl.: R, Camp.: RR, Brab.: RR (†1852), Mosan: RR, Ard.: RRR (†1868).

Luxembourg: - .

France: Mar.: RR (†1954), Boul.: RRR (†1954), Brab.: RRR (†1954).

Lit.: Boul.: 72, L11, L12: 87La66: 474-475, Barkman (1990: 13-14), van den Boom & van den Boom (2006), van den Broeck et al. (2006).