This name is a synonym of Juncus haenkei E.Mey..
The record derives from IOPI
(data supplied on 2012-03-23)
which reports it as a synonym (record 314501) with original publication details: Bot. Jahrb. Syst. 12: 215 1890.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:132015-2.
This name was in version 1 of The Plant List, record kew-314501, and has not been changed.