This name is a synonym of Dyssodia papposa (Vent.) Hitchc..
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 8E8D462B-D21D-45F2-9616-C2D46113361E) with original publication details: 331 1957.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:86473-2.
This name was in version 1 of The Plant List, record gcc-118393.