This name is a synonym of Agave spicata Cav..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 274715) with original publication details: Prim. Contr. Monogr. Agave 14 1885.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:6796-2.
This name was in version 1 of The Plant List, record kew-274715, and has not been changed.