This name is a synonym of Ischaemum barbatum Retz..
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 424030) with original publication details: Ess. Agrostogr. 111 1812.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:408304-1.
This name was in version 1 of The Plant List, record kew-424030.