This name is a synonym of Riccardia graeffei (Stephani) Hewson.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35200019) with original publication details: Hedwigia 32: 21 1893.
This name was in version 1 of The Plant List, record tro-35200019, and has not been changed.