⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35217437, and has not been changed.

Hypnum purum f. nigrescens Jaap is a synonym of Pseudoscleropodium purum f. nigrescens (Jaap) Podp.

This name is a synonym of Pseudoscleropodium purum f. nigrescens (Jaap) Podp..

The record derives from Tropicos which reports it as a synonym (record 35217437) with original publication details: J. Hattori Bot. Lab. 1903.