Mayrhofer H. & Sheard J.W.
Four notable saxicolous species of the lichenized Ascomycete genus Rinodina from the Arctic
Rinodia calcigena (Th. Fr.) Lynge belongs to the R. bischoffii- rather than to the R. bicincta-group of species. It is most closely related R. castanomelodes Mayrh. and Poelt but is allopatric with it. Rinodina endophragmia Lamb, described from the Antarctic, is a bipolar species and R. arnoldii Mayrh. and Poelt is also recorded from the Arctic for the first time. Rinodina endophragmia, now found to be widely distributed in West Greenland, it compared to R. straussii Steiner emend. Mayrh. and to …