This name is a synonym of Agave karwinskii Zucc..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 293938) with original publication details: Hort. Dyck. 8 1834.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:62077-1.
This name was in version 1 of The Plant List, record kew-293938, and has not been changed.