This name is a synonym of Yucca glauca Nutt..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 293107) with original publication details: Vilm. Blumengärtn. ed. 3 1: 1057 1895.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:270273-2.
This name was in version 1 of The Plant List, record kew-293107.