⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35170927, with some changes.

Mnium undulatum var. densirete Broth. is a synonym of Plagiomnium arbusculum (Müll. Hal.) T.J. Kop.

This name is a synonym of Plagiomnium arbusculum (Müll. Hal.) T.J. Kop..

The record derives from Tropicos which reports it as a synonym (record 35170927) with original publication details: Symb. Sin. 4: 61 61 1929.