This name is a synonym of Sandeothallus radiculosus (Schiffner) R.M. Schust..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 35203329) with original publication details: Oesterr. Bot. Z. 51: 48 1901.
This name was in version 1 of The Plant List, record tro-35203329, and has not been changed.