This name is a synonym of Dasylirion quadrangulatum S.Watson.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 303968) with original publication details: Gartenwelt 11: 77 1906.
This name was in version 1 of The Plant List, record kew-303968, and has not been changed.