This name is a synonym of Ocimum obovatum E.Mey. ex Benth..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 454072) with original publication details: Explor. Bot. Afrique Occ. Franç. 1: 510 1920.
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 Ocimum affine in version 1 of The Plant List.