This name is a synonym of Hexalectris arizonica (S.Watson) A.H.Kenn. & L.E.Watson.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 99081) with original publication details: Lindleyana 8: 122 1993.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:973607-1.
This name was in version 1 of The Plant List, record kew-99081.