This name is a synonym of Evolvulus nummularius (L.) L..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50163731) with original publication details: An. Inst. Butantan I 6: 39 1922.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:102676-2.
This name was in version 1 of The Plant List, record tro-50163731.