This name is a synonym of Diapensia lapponica subsp. obovata (F.Schmidt) Hultén.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Trudy Imp. S.-Peterburgsk. Bot. Sada 1: 489 1872.
This name was in version 1 of The Plant List, record kew-2765263, and has not been changed.