This name is a synonym of Adenostyles alpina subsp. nebrodensis (Wagenitz & I.Müll.) Greuter.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record BC1A48E4-9EA5-433D-B53A-FDDFCB4CB322) with original publication details: Guss.. 1844. 449 1844.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:77086566-1.
This name was in version 1 of The Plant List, record gcc-144345, and has not been changed.