This name is a synonym of Alluaudia comosa (Drake) Drake.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 61529) with original publication details: Compt. Rend. Hebd. Séances Acad. Sci. 133: 241 1903.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:782776-1.
This name was in version 1 of The Plant List, record kew-61529, and has not been changed.