This name is a synonym of Euclidium syriacum (L.) R.Br..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 100360204) with original publication details: Reise Russ. Reich. 3: 741, tab. 51. 1776.
This name was in version 1 of The Plant List, record tro-100360204.