This name is a synonym of Ammannia robusta Heer & Regel.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Bot. Jahrb. Syst. 1: 250 1880.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:11330-2.
This name was in version 1 of The Plant List, record kew-2633692, and has not been changed.