This name is a synonym of Tinnea aethiopica subsp. litoralis Vollesen.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 460702) with original publication details: Bot. Mag. 110: t. 6744 1884.
This name record (from WCSP) 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 Tinnea aethiopica in version 1 of The Plant List.