This name is a synonym of Hieracium levicaule subsp. triviale (Norrl.) Zahn.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record B17A14CD-15F0-41D8-B2F4-44D3352FDE50) with original publication details: 105 1901.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:77072709-1.
This name was in version 1 of The Plant List, record gcc-37148.