⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35111205, and has not been changed.

Barbula rigidula var. flaccida Roll is a synonym of Didymodon rigidulus var. flaccidus (Roll) Roll

This name is a synonym of Didymodon rigidulus var. flaccidus (Roll) Roll.

The record derives from Tropicos which reports it as a synonym (record 35111205) with original publication details: Deutsche Bot. Monatsschr. 3: 164 164 1885.