This name is a synonym of Allamanda schottii Pohl.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 6169) with original publication details: Bot. Mag. 77: t. 4594 1851.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:76480-1.
This name was in version 1 of The Plant List, record kew-6169.