⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-35104580, and has not been changed.
This name is a synonym of Calliergon cuspidatum var. umbrosum .
The record derives from Tropicos which reports it as a synonym (record 35104580
) with original publication details: Verh. Bot. Vereins Prov. Brandenburg 42: 279 279 1901.