a1 Fachbereich Biologie der Philipps-Universität, Karl von Frisch-Strasse, D-3550 Marburg/Lahn, F.R.G.
Abstract
The name Diploschistes gypsaceus is lectotypified on material of a saxicolous taxon, while a widespread terricolous taxon, frequently named D. gypsaceus, must be named D. diacapsis. Synonyms are listed and the characters of both species reviewed.
(Accepted August 04 1987)