This name is a synonym of Juncus gerardii Loisel..
The record derives from IOPI
(data supplied on 2012-03-23)
which reports it as a synonym (record 314652) with original publication details: Manual ed. 2: 483 1856.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:132055-2.
This name was in version 1 of The Plant List, record kew-314652.