⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35105672, with some changes.

Thuidium longissimum Herzog is a synonym of Thuidium cymbifolium (Dozy & Molk.) Dozy & Molk.

The record derives from Tropicos which reports it as a synonym (record 35105672) with original publication details: Hedwigia 49: 125 125 1909.