This name is a synonym of Athysanus unilateralis (M.E.Jones) Jeps..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 4102643) with original publication details: Bull. Calif. Acad. Sci. 1(3): 72 1885.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:285308-1.
This name was in version 1 of The Plant List, record tro-4102643.