This name is a synonym of Agave parryi Engelm..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 293694) with original publication details: Rep. (Annual) Missouri Bot. Gard. 22: 90 1911 publ. 1912.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:6420-2.
This name was in version 1 of The Plant List, record kew-293694.