This name is a synonym of Rosa canina f. laxifolia Borb s.
The record derives from RJP
(data supplied on 2011-10-18)
which reports it as a synonym and as a spelling variant (record 31604) with original publication details: ; 1879 137 1880.
This name record (from RJP) 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 Rosa canina in version 1 of The Plant List.