by G. Rambold & D. Triebel, July 1993

Rhizocarpon pusillum Runemark on Sporastatia testudinea (Ach.) A. Massal.

Specimen: Sweden, Torne Lappmark, Slattatjakka, 23 March 1986, D. Triebel 1790 & J. Schwaiger (M).