This name is a synonym of Agave striata subsp. falcata (Engelm.) Gentry.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 294236) with original publication details: Prim. Contr. Monogr. Agave 16 1885.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:6714-2.
This name was in version 1 of The Plant List, record kew-294236.