⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-35114821, and has not been changed.
This name is a synonym of Brachythecium plumosum var. perrobustum Sakurai.
The record derives from Tropicos which reports it as a synonym (record 35114821) with original publication details: Trans. Sapporo Nat. Hist. Soc. 13(4): 394 394 1934.