This name is a synonym of Isatis tinctoria subsp. tomentella (Boiss. & Balansa) P.H.Davis.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Diagn. Pl. Orient. II, 5: 46 1856.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:285874-1.
This name was in version 1 of The Plant List, record kew-2867053, and has not been changed.