This name is a synonym of Hoffmannseggia glauca (Ortega) Eifert.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 13001439) with original publication details: Smithsonian Contr. Knowl. 3(5): 56–57 1852.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:123407-2.
This name was in version 1 of The Plant List, record tro-13001439, and has not been changed.