This name is a synonym of Laserpitium siler subsp. zernyi (Hayek) Tutin.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Oesterr. Bot. Z. 70: 17 1921.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:844109-1.
This name was in version 1 of The Plant List, record kew-2341565.