This name is a synonym of Olsynium filifolium (Gaudich.) Goldblatt.
The record derives from iPlants
(data supplied on 2012-03-23)
which reports it as a synonym and as a spelling variant (record 324914) with original publication details: Voy. Uranie 421 1829.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:441040-1.
This name was in version 1 of The Plant List, record kew-324914.