⚠ Version 1 of The Plant List has been superseded.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 Calliergon cuspidatum in version 1.1 of The Plant List.

Calliergon cuspidatum var. angustissimum (Mönk.) Warnst. is a synonym of Calliergonella cuspidata var. angustissima (Mönk.) Podp.

This name is a synonym of Calliergonella cuspidata var. angustissima (Mönk.) Podp..

The record derives from Tropicos which reports it as a synonym (record 35153401) with original publication details: Krypt.-Fl. Brandenburg, Laubm. 977 977 1906.