⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35112053, with some changes.

Hypnum donnianum Sm. is a synonym of Plagiothecium denticulatum subsp. donnianum (Sm.) Giacom.

The record derives from Tropicos which reports it as a synonym (record 35112053) with original publication details: Fl. Brit. 3: 1286 1286 1804.