This name is a synonym of Tibouchina multiflora Cogn..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50291324) with original publication details: London J. Bot. 2: 351 1843.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:574840-1.
This name was in version 1 of The Plant List, record tro-50291324, and has not been changed.