This name is a synonym of Taraxacum palustre (Lyons) Symons.
The record derives from TICA
(data supplied on 2012-02-11)
which reports it as a synonym (record 04129F7D-2756-4ED7-BDAC-AC018BCFA9E5) with original publication details: Sv. Norsk Exc.-Fl.: 111. 1846 111 1846.
This name record (from TICA) 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 Taraxacum officinale in version 1 of The Plant List.