This name is a synonym of Pseudopentameris macrantha (Schrad.) Conert.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an invalid name (record 397415) with original publication details: Nomencl. Bot. ed. 2, 1: 171 1840.
This name was in version 1 of The Plant List, record kew-397415, and has not been changed.