This name is a synonym of Bryum muehlenbeckii Bruch & Schimp..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35116166) with original publication details: Coroll. Fl. Upsal. 68 1834.
This name was in version 1 of The Plant List, record tro-35116166.