⚠ Version 1 of The Plant List has been superseded.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 Mnium rigidum in version 1.1 of The Plant List.
This name is a synonym of Pohlia mauiensis .
The record derives from Tropicos which reports it as a synonym (record 35170752
) with original publication details: Bull. Herb. Boissier 5: 548 548 1896.