This name is a synonym of Dasylirion wheeleri S.Watson ex Rothr..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 303997) with original publication details: Proc. Amer. Philos. Soc. 50: 439 1911.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:76822-2.
This name was in version 1 of The Plant List, record kew-303997.