This name is a synonym of Juncus balticus subsp. ater .
The record derives from IOPI
(data supplied on )
which reports it as a synonym (record 314467
) with original publication details: Fl. Rocky Mts. 151 1917.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:132005-2
.
This name was in version 1 of The Plant List, record kew-314467.