This name is a synonym of Chascanum cernuum (L.) E.Mey..
The record derives from WCSP
(data supplied on 2012-03-26)
which reports it as a synonym (record 23509) with original publication details: Prodr. 11: 559 1847.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:861168-1.
This name was in version 1 of The Plant List, record kew-23509.