⚠ Version 1 of The Plant List has been superseded.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 Isothecium myurum in version 1.1 of The Plant List.
This name is a synonym of Isothecium myurum f. elongatum .
The record derives from Tropicos which reports it as a synonym (record 35138048
) with original publication details: Bryol. Eur. 5: 243. pl. 533: $beta$ (fasc. 46--47. Monogr. 5. pl. 1: $beta$) 243 1851.