This name is a synonym of Potamogeton berchtoldii Fieber.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 374912) with original publication details: Meddel. Grønland 147(9): 44 1952.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:60449072-2.
This name was in version 1 of The Plant List, record kew-374912.