This name is a synonym of Hesperis matronalis subsp. nivea Kulcz..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100361614) with original publication details: Mitt. Naturwiss. Vereines Steiermark 31: 100. 1895.
⥇ A cross-taxon basionym link was ignored while processing this record,
see Hesperis nivea Baumg..
This name was in version 1 of The Plant List, record tro-100361614, and has not been changed.