This name is a synonym of Isolona hexaloba (Pierre) Engl. & Diels.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 1601060) with original publication details: Bot. Jahrb. Syst. 39: 485 1905.
This name was in version 1 of The Plant List, record tro-1601060.