This name is a synonym of Plumeria obtusa var. sericifolia (C.Wright ex Griseb.) Woodson.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 161637) with original publication details: Cat. Pl. Cub. 171 1866.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:204004-2.
This name was in version 1 of The Plant List, record kew-161637.