This name is a synonym of Cytisus purgans (L.) Spach.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 13033134) with original publication details: Syst. Nat. (ed. 12) 2: 474 1767.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:519086-1.
This name was in version 1 of The Plant List, record tro-13033134, and has not been changed.