This name is a synonym of Dasylirion glaucophyllum Hook..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 303956) with original publication details: Rev. Hort. 1872: 435 1872.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:533722-1.
This name was in version 1 of The Plant List, record kew-303956, and has not been changed.