This name is a synonym of Juncus balticus subsp. andicola (Hook.) Snogerup.
The record derives from IOPI
(data supplied on 2012-03-23)
which reports it as a synonym (record 314515) with original publication details: Symb. Fl. Argent. 316 1879.
This name was in version 1 of The Plant List, record kew-314515.