This name is a synonym of Crotalaria argyraea Baker.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 13022824) with original publication details: Verh. Bot. Vereins Prov. Brandenburg 30: 157 1888.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:488627-1.
This name was in version 1 of The Plant List, record tro-13022824, and has not been changed.