This name is a synonym of Physcomitrella patens (Hedw.) Bruch & Schimp..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35204155) with original publication details: Bryol. Eur. Publ. Monogr. Phascum: 4 1836.
This name was in version 1 of The Plant List, record tro-35204155.