⚠ Version 1 of The Plant List has been superseded.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 squarrosum in version 1.1 of The Plant List.

Hypnum squarrosum subsp. calvescens (Kindb.) Boulay is a synonym of Rhytidiadelphus squarrosus subsp. calvescens (Kindb.) Giacom.

This name is a synonym of Rhytidiadelphus squarrosus subsp. calvescens (Kindb.) Giacom..

The record derives from Tropicos which reports it as a synonym (record 35128818) with original publication details: Musc. France, Mousses 5: 1884.