This name is a synonym of Hesperis pendula DC..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100357513) with original publication details: Ann. Sci. Nat., Bot., sér. 2, 17: 64 1842.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:285217-1.
This name was in version 1 of The Plant List, record tro-100357513.