⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-35147195, with some changes.

Grimmia pennsylvanica var. bestii Grout is a synonym of Grimmia pilifera P. Beauv.

This name is a synonym of Grimmia pilifera P. Beauv..

The record derives from Tropicos which reports it as a synonym (record 35147195) with original publication details: Bryologist 7: 6 6 1904.