This name is a synonym of Physaria acutifolia Rydb..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 4103073) with original publication details: Contr. Gray Herb. 214: 14–15 1984.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:282781-2.
This name was in version 1 of The Plant List, record tro-4103073, and has not been changed.