⚠ Version 1 of The Plant List has been superseded.

This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Hypnum vallis-clausae in version 1.1 of The Plant List.

Hypnum vallis-clausae var. orthocladon (P. Beauv.) Austin is a synonym of Hygroamblystegium fluviatile var. orthocladon (P. Beauv.) H.A. Crum, Steere & L.E. Anderson

This name is a synonym of Hygroamblystegium fluviatile var. orthocladon (P. Beauv.) H.A. Crum, Steere & L.E. Anderson.

The record derives from Tropicos which reports it as a synonym (record 35129353) with original publication details: Musci Appalach. . . 1870.