This name is a synonym of Agenium leptocladum (Hack.) Clayton.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 388075) with original publication details: Kew Bull. 27: 447 1972.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:384757-1.
This name was in version 1 of The Plant List, record kew-388075.