This name is a synonym of Juncus balticus subsp. andicola (Hook.) Snogerup.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 316841) with original publication details: Mitt. Inst. Allg. Bot. Hamburg 8: 40 1929.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:230477-2.
This name was in version 1 of The Plant List, record kew-316841.