⚠ Version 1 of The Plant List has been superseded.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 Hylocomium squarrosum in version 1.1 of The Plant List.
This name is a synonym of Rhytidiadelphus squarrosus subsp. calvescens .
The record derives from Tropicos which reports it as a synonym (record 35164518
) with original publication details: Syn. Brit. Mosses (ed. 2) 234 234 1884.