The record derives from WCSP
(data supplied on )
which reports it as a synonym and as an invalid name (record
461181) with original publication details: Wochenschr. Vereines Beford. Gartenbaues Konigl. Preuss. Staaten 14: 130 1871.
Full publication details for this name can be found in IPNI:
This name record (from WCSP) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Allamanda chelsonii in version 1 of The Plant List.