This name is a synonym of Tibouchina schiedeana (Schltdl. & Cham.) Cogn..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50203148) with original publication details: Trans. Linn. Soc. London 28(1): 45 1871.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:574867-1.
This name was in version 1 of The Plant List, record tro-50203148, and has not been changed.