This name is a synonym of Tragopogon pratensis subsp. leiocarpus (Trnka) Greuter.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym and as an illegitimate name (record EB5B0B54-87D3-4109-82DE-A593CF227F6F) with original publication details: 178 1857.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:256050-1.
This name was in version 1 of The Plant List, record gcc-105439, and has not been changed.