This name is a synonym of Sphagnum riparium Ångström.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35175196) with original publication details: Handb. Skand. Fl. (ed. 9) 2: 83 1864.
This name was in version 1 of The Plant List, record tro-35175196.