This name is a synonym of Riccardia nudiflora (Stephani) Grolle.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35189718) with original publication details: Bot. Gaz. 15: 282 1890.
This name was in version 1 of The Plant List, record tro-35189718, and has not been changed.