This name is a synonym of Dioon edule Lindl..
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 383600) with original publication details: Ill. Hort. 10(Misc.): 4 1863.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:297062-1.
This name was in version 1 of The Plant List, record kew-2769017.