This name is a synonym of Saxifraga nathorstii (Dusén) Hayek.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50081903) with original publication details: Bot. Not. 1901: 76 1901.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:228548-2.
This name was in version 1 of The Plant List, record tro-50081903, and has not been changed.