⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Hypnum laetum in version 1.1 of The Plant List.
This name is a synonym of Brachythecium ruderale .
The record derives from Tropicos which reports it as a synonym (record
35117999) with original publication details: Proc. Amer. Acad. Arts 5: 289 289 1861.