This name is a synonym of Phlox lutescens (S.L. Welsh) S.L. Welsh.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 25800559) with original publication details: Great Basin Naturalist 45(4): 792 1985.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:948833-1.
This name was in version 1 of The Plant List, record tro-25800559, and has not been changed.