This name is a synonym of Tibouchina gracilis (Bonpl.) Cogn..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50232481) with original publication details: Abh. Königl. Ges. Wiss. Göttingen 24: 128 1879.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:574855-1.
This name was in version 1 of The Plant List, record tro-50232481.