This name is a synonym of Argocoffeopsis rupestris subsp. thonneri (Lebrun) Robbr..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 45712) with original publication details: Encycl. Biol. 28: 137 1947.
This name was in version 1 of The Plant List, record kew-45712, and has not been changed.