This name is a synonym of Yucca faxoniana Sarg..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym and as an illegitimate name (record 291700) with original publication details: N. Amer. Trees 157 1908.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:293670-2.
This name was in version 1 of The Plant List, record kew-291700, and has not been changed.