A molecular phylogeny based on ITS1/ITS2 and mtSSU DNA sequences is
presented for lichen-forming fungi in Protoparmeliopsis and its distant relative Sedelnikovaea
gen. nov. The positions of the two genera in the phylogenetic tree of the families Lecanoraceae
and Lecideaceae are discussed. The new combination Sedelnikovaea baicalensis (? Lecanora
baicalensis) is proposed. The unique Sedelnikovaea-type ascus is described and illustrated.
Sedelnikovaea baicalensis and Zwackhiomyces zarei are for the first time recorded from China.
