This name is a synonym of Bryum uliginosum (Brid.) Bruch & Schimp..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35159222) with original publication details: Muscol. Recent. Suppl. 4: 99 1819.
This name was in version 1 of The Plant List, record tro-35159222, and has not been changed.