This name is a synonym of Ipomoea batatas (L.) Lam..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50149853) with original publication details: Fl. Brit. W. I. 468 1862.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:129186-2.
This name was in version 1 of The Plant List, record tro-50149853.