This name is a synonym of Tabebuia insignis (Miq.) Sandwith.
The record derives from iPlants
(data supplied on 2012-03-23)
which reports it as a synonym (record 317141) with original publication details: Loefgrenia 50: 4 1970.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:109693-1.
This name was in version 1 of The Plant List, record kew-317141.