This name is a synonym of Koehneria madagascariensis (Baker) S.A. Graham, Tobe & Baas.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 19200235) with original publication details: J. Linn. Soc., Bot. 18: 267 1881.
This name was in version 1 of The Plant List, record tro-19200235, and has not been changed.