This name is a synonym of Convolvulus lineatus L..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8502820) with original publication details: Encycl. 3(2): 549 1792.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:267019-1.
This name was in version 1 of The Plant List, record tro-8502820, and has not been changed.