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 392509) with original publication details: Oesterr. Bot. Z. 51: 152 1901.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:12857-2.
This name was in version 1 of The Plant List, record kew-392509.