This name is a synonym of Handroanthus heptaphyllus (Vell.) Mattos.
The record derives from iPlants
(data supplied on 2012-03-23)
which reports it as a synonym (record 319108) with original publication details: Vidensk. Meddel. Naturhist. Foren. Kjøbenhavn 1893: 114 1894.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:249801-2.
This name was in version 1 of The Plant List, record kew-319108.