This name is a synonym of Citrullus lanatus (Thunb.) Matsum. & Nakai.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Smithsonian Contr. Bot. 45: 15 1980.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:879397-1.
This name was in version 1 of The Plant List, record kew-2723910.