This name is a synonym of Hesperis matronalis subsp. candida (Kit.) Hegi & Em.Schmid.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym and as a spelling variant with original publication details: Oesterr. Bot. Z. 8: 22 1858.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:285100-1.
This name was in version 1 of The Plant List, record kew-2847583, and has not been changed.