in Arup, Søchting & Frödén, Nordic J. Bot. 31: 72 (2013).

Basionym: Placodium obliterans Nyl., Flora, Regensburg 57: 7 (1874).

Type: Norway, Oppland, Dovre, Kongsvold, 1870, Zetterstedt 231 (H-NYL 29214 - lectotype, selected by Nordin 1972: 133).