This name is a synonym of Juncus bulbosus L..
The record derives from IOPI
(data supplied on 2012-03-23)
which reports it as a synonym (record 467425) with original publication details: Ann. Bot. Fenn. 47: 412 2010.
This name record (from IOPI) was not included in version 1 of The Plant List. It is possible the same name was included from a different data source, to check this you can search for Juncus bulbosus in version 1 of The Plant List.